Wikipedia
List of commercial video games with later released source code
This is a list of commercial video games with later released available source code. The source code of these commercially developed and distributed video games is available to the public or the games' communities.
Background edit
Commercial video games are typically developed as proprietary closed source software products, with the source code treated as a trade secret (unlike open-source video games).[1] When there is no more expected revenue,[citation needed] these games enter the end-of-life as a product with no support or availability for the game's users and community.[2]
In several of the cases listed here, the game's developers released the source code expressly to prevent their work from becoming lost. Such source code is often released under varying (free and non-free, commercial and non-commercial) software licenses to the games' communities or the public; artwork and data are often released under a different license than the source code, as the copyright situation is different or more complicated. The source code may be pushed by the developers to public repositories (e.g. SourceForge or GitHub), or given to selected game community members, or sold with the game, or become available by other means. Source code availability in whatever form allows the games' communities to study how the game works, make modifications, and provide technical support themselves when the official support has ended,[2] e.g. with unofficial patches to fix bugs or source ports to make the game compatible with new platforms.
Some developers that have released their source code have concluded that, in general terms, such action has not been harmful and even beneficial, among them Alec Holowka (Aquaria), Adam Saltsman (Canabalt),[3] John Carmack (Wolfenstein 3D, Doom, Quake),[4] Brian Hook (Quake II),[5] and Terry Cavanagh (VVVVVV).[6] Wolfire Games also noted (along with Saltsman) that releasing the source code didn't reduce sales.[3][7] However, releasing the source code may and has led to clones using the original proprietary assets from the game, with two notable examples of games having clones thanks to the source release being Canabalt and Lugaru HD. Although Saltsman has noted that those clones can be removed from storefronts with a DMCA takedown notice,[3] Jeff Rosen, co-founder of Wolfire Games, has recognized that such practices may discourage game developers from releasing their code.[8]
Lists edit
Open engine and game data edit
The games in this table were released under a free and open-source license with free content which allows reuse, modification and commercial redistribution of the whole game. Licenses can be public domain, GPL, BSD, Creative Commons, zlib, MIT, Artistic License or other (see the comparison of Free and open-source software and the Comparison of free and open-source software licenses).
| Title | First release | Source code release | Genre | Engine license | Content license | Original developer | Additional information | |
|---|---|---|---|---|---|---|---|---|
| Abuse | 1995 | 2003 | Run and gun | Public domain software | Public domain and Proprietary* | Crack dot Com | Game source code was released as public domain along with the shareware-released media files.[9] Only shareware data, excluding the sound effects, is in the public domain; the rest is proprietary. In 2016 a community developer released a "20th anniversary source port"[10][11] which enabled custom resolutions, OpenGL rendering, Xbox 360 controller support and fixed the music. | |
| Adventureland | 1978 | 1980 | Text Adventure game | Public domain software | Public domain | Scott Adams | Scott Adams Adventureland's[12] source code was published in SoftSide magazine in 1980[13] and the database format was subsequently used in other interpreters such as Brian Howarth's Mysterious Adventures series.[14] | |
| Alien Bash I+II[importance?] | 1993 | 2014 | Run and gun | public domain software | public domain[15] | Glen Cumming | Glen Cumming provided media and material of his Amiga games AlienBash and AlienBash II to the fan community, who was able to restore source code in 2014.[16][third-party source needed] | |
| Ant-Eater | 1983 | 2021 | Maze | MIT | MIT | Eddy Fries | On March 30, 2021, Kay Savetz uploaded the source code for Ant-Eater (a Dig Dug clone), Princess and Frog (a Frogger clone), Sea Chase, and two unreleased video games by Ed Fries (of Halo 2600 fame) to GitHub under the MIT license with permission of Fries.[17] | |
| AstroMenace (now OpenAstroMenace) | 2006 | 2007 | Arcade | GPL-3.0-or-later | CC BY-SA 3.0 | Viewizard | Based on AstroMenace which was released in February 2007 as shareware for Windows and freeware for Linux.[18] Also the source code of another Viewizard game, the puzzle collection Memonix, was released.[19] | |
| Beyond the Titanic | 1986 | 2009 | Text adventure | GPL-2.0-or-later | GPL-2.0-or-later | Apogee Software | Game source released on March 20, 2009.[20] | |
| Bird Strike | 1984 | 2021 | Shoot 'em up | GPL-3.0 | GPL-3.0 | Andy Frigaard | On June 20, 2021, the source code for Bird Strike for the BBC Micro (one of the first releases by Firebird Software) was uploaded to GitHub under the GPLv3 by Andy Frigaard, the original developer.[21] | |
| Blades of Exile | 1997 | 2007 | RPG | GPL-2.0-only | GPL-2.0-only | Spiderweb Software | Source code and artwork was released by Jeff Vogel (Spiderweb Software) under a GPL license in June 2007.[22] | |
| Clonk series (now OpenClonk) | 1994 | 2010/2014 | Action, RTS, Platform | ISC | CC BY-SA 3.0 | RedWolf Design / Matthes Bender | For the series (Clonk 1, Clonk 2 Debakel, Clonk 3 Radikal, Clonk 4 World, Clonk Planet, Clonk Endeavor and Clonk Rage) the C++ source code was released under the "Clonk Source Code License (ISC License)".[23] The content of the original game series was released under the CC BY-NC.[24] Based on Clonk Rage code base the community continues the development as OpenClonk under ISC license and content as CC BY-SA. | |
| Colobot | 2001 | 2012 | Educational game, RTS | GPLv3 | GPLv3 | Epsitec SA | Game source released on March 26, 2012.[25] | |
| Colossal Cave Adventure | 1976 | 2000/2005 (?) | Text Adventure | Public domain software[26][27][28] / BSD license (2017) | no artwork (Public domain software) | Will Crowther | Source code variants are at least available as far back as 2000.[29] An authentic version was retrieved in 2005 "from a backup of Don Woods's student account at the Stanford Artificial Intelligence Lab (SAIL)".[26] In February 2017 Eric S. Raymond was involved in the release of version 2.5 under the BSD license, the last release by the original author alone.[30][31][32] | |
| Cylindrix | 1996 | 2001 | Arcade, Shooter | LGPL-2.0-only | LGPL-2.0-only | Goldtree Enterprises / Softdisk | Around December 2001 the games was ported from DOS to Windows and released under the LGPL to the public.[33][34] | |
| Cytadela (or The Citadel) | 1995 | 2006 | FPS | GPL-3.0-or-later | GPL-3.0-or-later | Virtual Design | Upon its retail release, Cytadela received generally favorable reviews.[35] In early 2006 the original Cytadela developer offered the Amiga source code of the FPS game to the community, which started a conversion project hosted on SourceForge.[36][37][38] Ported to several platforms, latest version released in 2013. | |
| Dandy | 1983 | 2018 | Dungeon crawl | Apache-2.0 | Apache-2.0 | John Howard Palevich | In March 2018 the source code for the Atari 8-bit version was released by Kevin Savetz with permission of Palevich.[39] It was also uploaded to Palevich's own GitHub repository for Dandy which uses the Apache License 2.0, where he also maintains reverse engineered ports to a variety of programming languages.[40] | |
| Dragonfire | 1982 | 2003 | action | public domain software | public domain | Imagic / Bob Smith | Source code of this Imagic Atari 2600 game was released by developer Bob Smith on May 24, 2003, into the public domain.[41][42][43] Many more Atari games got disassembled and commented by the Atari community.[44] | |
| Duelyst | 2016 | 2023 | CCG | MIT/CC0 (game engine/game code) | CC0 | Counterplay Games | Almost three years later after the servers were shut down,[45] Counterplay Games released the entire game (source code and assets), built on top of Backbone.js, to the public domain under the CC0 license on GitHub.[46] | |
| Eat The Whistle - France 98 | 1998 | 2004 | Sports game | GPL-2.0-only[47] | GPL-2.0-only | Hurricane Studios | The France 98 football Simulation video game was released for the Amiga in 1998. Around 2004 Eat the Whistle was released under the GPL-2.0-only on SourceForge.[48] Later ported to many other platforms.[49] | |
| Escape Towards The Unknown | 1998 | 2004 | Point and click adventure | GPL-2.0-only[50] | GPL-2.0-only | Hurricane Studios | Around 2004 Escape Towards The Unknown was released under the GPL-2.0-only on SourceForge, together with the Eat The Whistle.[51][52] Later ported to many other platforms. | |
| Fish Fillets (now Fish Fillets NG) | 1998 | 2002 | Puzzle | GPL-2.0-or-later | GPL-2.0-or-later | ALTAR Games | Released commercially as Fish Fillets in 1998. Source released in 2002 under the GPL.[53] | |
| Gladiator | 1995 | 2002 | top down perspective action game | GPLv2 | GPLv2 | Forgotten Sages Games | Released in 1995 as DOS shareware game,[54] in 2002 the game's source code was released under GPL by the developers. Development and porting by the game's community continued on SourceForge under the name OpenGlad.[55] | |
| Glitch | 2009 | 2013 | MMO | CC0 (client and other parts) | CC0 | Tinyspeck | In 2013, one year after the MMO was shut down, most of the artwork and parts of the code were released under the CC0 license.[56][57] | |
| God of Thunder | 1993 | 2020 | Puzzle video game | Public domain software | Public domain (music and sound effects) Freeware (game graphics) | Adept Software | On March 27, 2020, Ron Davis released the source code and sound assets as public domain on SourceForge.[58] | |
| Gravity Force 2 | 1994 | 2008 | Multidirectional shooter | CC BY-SA 4.0 | CC BY-SA 4.0 | Jens Andersson & Jan Kronqvist | On September 21, 2008, the developers of the Amiga shareware title Gravity Force 2 released the source code for "nostalgic interest" without specified license.[59] In April 2017 the authors clarified the game and source code license as CC BY-SA 4.0.[60] | |
| Habitat | 1985 | 2016 | early MMORPG | MIT | MIT | Randy Farmer and Chip Morningstar/Lucasfilm Games | The Museum of Art and Digital Entertainment received the game's source code from its original developers,[61] and restored the code in a Hackathon.[62] In July 2016, the source code was uploaded to GitHub under MIT license.[63][64] | |
| Halloween: The New Nightmare | 2004[65] | 2021 | FPS | GPLv3 | GPLv3 | Jadeware[66] | Commercial indie game first released online and by mail order. Released on to GitHub in 2021.[67] | |
| Inside a Star-Filled Sky | 2011 | 2011 | Top-down shooter | Public domain software | Public domain | Jason Rohrer | Inside a Star-filled Sky, for purchase for $12,[68] was put by developer Jason Rohrer into public domain,[69] like many other of his games.[70] | |
| Kaiser II | 1988 | 2003 | economical simulation | GPL | GPL | Carsten Strotmann | In 2003 Kaiser II author Carsten Strotmann released the source code under the GPL as Free Software.[71][72] | |
| Kroz | 1987 | 2009 | Maze | GPL-2.0-or-later | GPL-2.0-or-later | Apogee Software | Game source released on March 20, 2009.[20] | |
| Lemonade Stand | 1973 | 1979 | Business simulation game | Public domain software | no artwork (Public domain software) | Bob Jamison, Charlie Kellner / MECC | The Applesoft BASIC source code was available since 1979.[73][74] The game was later ported to modern REALbasic and released as free and open-source software for many platforms like Windows and MacOS.[75] | |
| Lugaru | 2005 | 2010 / 2016 (assets) | Action-adventure game | GPL-2.0-or-later | CC BY-SA 3.0 | Wolfire Games | Open sourced with the first Humble Indie Bundle by Wolfire Games.[76] In November 2016 David Rosen relicensed all assets under the open content CC BY-SA 3.0 Creative Commons license which makes Lugaru a fully free video game.[77] In begin 2017 an open source HD version followed.[78][79] | |
| Maelstrom | 1992 | 1995/2010 | Shoot 'em up | GPL-2.0-only | CC BY 3.0 | Ambrosia Software | Asteroids clone. 1995 source released under GPL. In 2010 Andrew Welch and Ian Gilman released the game's contents under a Creative Commons license.[80] | |
| MegaBall | 1991 | 2012 | Breakout clone | Apache-2.0 | Apache-2.0 | Mackey Software/Ed Mackey | The Amiga game MegaBall was programmed by Mackey Software in 1991–1993. Inspired by Taito's Arkanoid it has several features more. The original author released in 2012 the source code of MegaBall under the Apache License v2.[81][82] | |
| NoGravity | 1996 | 2005 | 3D space space shooter / Wing Commander | GPLv2 | GPLv2 | realtech VR | Source code released by realtech VR on February 16, 2005.[83] | |
| Nothing to Hide | 2013 | 2013 | Stealth game | CC0 | CC0 | Nicky Case | The crowdfunded surveillance/privacy-themed video game prototype by indie game developer Nicky Case was crowdfunded and opened under CC0 on GitHub between 2013 and 2015.[84][85][86][87][88] | |
| PaybackTime 2 | 1997 | 2014 | turn-based tactics game | public domain software | public domain | Niko Nevatie and Kari Luojus | The turn-based tactics game, inspired by Laser Squad and UFO: Enemy Unknown, was developed by two Finish students in Turbo Pascal and x86 assembly. They marketed their game as shareware for DOS in 1997.[89] The authors released the game in August 2014 as public domain software, including the assets.[90] | |
| Pinball Construction Set | 1983 | 2013 | pinball video game | MIT | MIT | Bill Budge, Electronic Arts | In 2013, Budge released the source code to the Atari 8-bit family and Apple II version of Pinball Construction Set to the public on GitHub under the MIT license.[91][92][93] | |
| Planet Blupi | 1997 | 2017 | Platformer | GPL-3.0-or-later | GPL-3.0-or-later | Epsitec SA / Daniel Roux, Denis Dumoulin, Mathieu Schroeter | Planet Blupie was freed (source code and all media files) and ported to all major platforms (Linux, macOS and Windows) for its 20th anniversary, released Open source under GPLv3 on GitHub in 2017.[94][95] Speedy Blupi, part of Blupi series, has been released as freeware by EPSITEC too and is available at blupi.org.[96] | |
| Spacewar! | 1962 | 2003 | Space combat | Public-domain software | Public domain | Steve Russell | Source code became available around the 2003.[97] | |
| RuneSword II | 2001 | 2004[98] | Turn-based strategy | Public domain software[99] | Public domain | CrossCut Games | In 2004 CrossCut Games released the game into the public domain on SourceForge.[100] Since then there is continuous development by the community on the game.[101] | |
| Ryzom | 2004 | 2010 | MMORPG | AGPL-3.0-or-later | CC BY-SA 3.0 | Nevrax | In response to the folding of Nevrax, the Free Ryzom Campaign was launched in order to gather enough funds from donations ("Crowdfunding") from the community to purchase Ryzom and release the game as free software. The campaign was almost successful with €172,988 of the required €200,000 gathered.[102][103] On May 6, 2010, Winch Gate announced the full release of source code and artwork, and a partnership with the Free Software Foundation.[104][105] | |
| Seven Kingdoms | 1996 | 2008 | RTS | GPLv2 | GPLv2 and Proprietary* | Enlight | Source code released by Enlight in November, 2008. *Music is proprietary[106][107] | |
| SimCity (Micropolis) | 1989 (as SimCity) | 2008 (as Micropolis) | City-building game | GPL-3.0-or-later[108] | GPL-3.0-or-later | Maxis (Will Wright/Don Hopkins) | Source code released by Don Hopkins under GPL in 2008. For trademark reasons released under the original working title Micropolis, also known as OLPC SimCity.[109] | |
| Sissyfight 2000 Returns | 2014 | 2018 | Multiplayer | MIT | CC BY | Zimmerman, Clark, and Bhatnagar | On April 30, 2013, Zimmerman, Clark, and Bhatnagar announced a crowdfunding campaign on Kickstarter to revive Sissyfight.[110] The campaign was funded on May 30, 2013 with a final total of $22,735.[111] First Beta versions were released 2014. On February 9, 2018, the source code was released under the open source MIT license and the assets under the CC BY Creative Commons license on GitHub.[112] | |
| Soldat | 2002 | 2020 | Run and gun | MIT | CC BY 4.0 | Team Soldat | Source code was released under MIT license on GitHub,[113][114] assets followed shortly after under CC BY 4.0.[115] | |
| Sopwith | 1984 | 2000 | Shoot 'em up | GPLv2 | GPLv2 | David L. Clark | The C and x86 assembly source code to Sopwith was released in 2000,[116] at first under a non-commercial use license, but later under the GNU GPL at the request of fans.[117] | |
| Stunt Copter | mid 1986 | ? | Arcade | Public domain software | Public domain | Duane Blehm / HomeTown Software | After Duane Blehm death in 1988, his parents released Stunt Copter's and his other games' (like ZeroGravity, Cairo Shootout and PUZZ'L) binaries and source code into the public domain.[118] | |
| Super Lemonade Factory | 2012 | 2012/2021 | Puzzle-platform | MIT/MIT—GPL-3.0-only (game engine/game code) | GPL-3.0-only | Initialsgames | Based on the Flixel engine developed for the iOS version of Canabalt (that would later become part of HaxeFlixel), and inspired by it to release the source code, with the purpose of enabling source ports.[119] The game was released as freeware on itch.io on February 2, 2021.[120] The entire source code repository (source code and art assets) for the Ouya version was released under the GPL-3.0-only license on GitHub on February 4, 2021 to support the efforts for the preservation of Ouya games.[121] | |
| Supernova | 1987 | 2009 | Text adventure | GPL-2.0-or-later | GPL-2.0-or-later | Apogee Software | Game source released on March 20, 2009.[20] | |
| Triplane Turmoil | 1996 | 2009 | side-scrolling dogfighting flying game | GPLv3 | GPLv3 | Dodekaedron Software | In 1996 Triplane Turmoil was originally released as shareware DOS game. In 2009 Dodekaedron Software Creations Oy placed Triplane Turmoil's source code, documentation, images and sounds under the GPLv3, hosted on SourceForge.[122][123] The community continued the support and ported the game to other platforms (Linux, Windows) via SDL. | |
| Tyrian (now OpenTyrian) | 1995 | 2007 | Scrolling shooter | GPLv2 | Freeware/CC BY 3.0 US[124][125] | World Tree Games Productions / Epic MegaGames (Jason Emery, Daniel Cook) | The OpenTyrian team ported the closed-source Pascal code of Tyrian to C with permission of Jason Emery in February 2007. The graphic artist Daniel Cook released the artwork shortly after. | |
| VGA Civil War Strategy Game | 1995 | 2017 | turn based strategy | MIT | MIT | W. R. Hutsell | In 2017 Mr. Hutsell gave the source code of VGA Civil War Strategy Game to Dave Mackey, who ported the game for modern platforms (Windows, Mac, Linux) with the help of SDL and other open source libraries from QuickBASIC to QB64.[126] The source code is released on GitHub under a MIT license.[127] | |
| Voxelquest | 2014 | 2016 | open world simulation | MIT | MIT | Gavan Woolery | After a successful crowdfunding project on Kickstarter to develop an open-world simulation game in 2014,[128] Gavan Woolery developed several iterations of the game's engine. After running out of funding for further development, he open-sourced with support of the backers the game's engine on github.com under MIT license in August 2016.[129][130] | |
| Wander | 1974 | 2015 | Text adventure | public domain (?) | public domain (?) | Peter Langston | As of April 2015, the source code (long thought to be lost) of Wander, one of the earliest mainframe text adventures, could be acquired from the original author.[131][132] | |
| WaterRace | 2000 | 2014 | Racing game | GPLv2 | GPLv2 (assets), CC BY-NC-SA 4.0 (music) | French Touch, SARL | In January 2014, Pierre-Olivier Latour, co-founder and CEO of French Touch, SARL, have uploaded the game's source code and assets on GitHub under the GPLv2 open source license [133] | |
| Warfare Incorporated (now Hostile Takeover) | 2003 | 2014 | RTS | FreeBSD | BSD license | Spiffcode | In July 2014 the game's source code and content got open sourced with the BSD license under the name "Hostile Takeover" on GitHub.[134][135] As result the game was ported by the game's community to alternative platforms like the Pandora handheld.[136] | |
| Warzone 2100 | 1999 | 2004/2008 | RTS | GPL-2.0-or-later | GPL-2.0-or-later, CC | Pumpkin Studios/Eidos Interactive | 3D real-time strategy game with a unit design system. First source part was released by Pumpkin Studios/Eidos Interactive in 2004 and the rest was released in 2008.[137] | |
| Word Whiz | 1988 | 2009 | Educational game | GPL-2.0-or-later | GPL-2.0-or-later | Apogee Software | Game source released on March 20, 2009.[20] | |
| Worms? | 1983 | 2021 | software toy | MIT | MIT | David S. Maynard | The source code for Worms?, one of the initial Electronic Arts releases, was uploaded to GitHub by Kay Savetz on March 17, 2021 under the MIT license with permission of Maynard.[138] | |
| Zork (also known as Dungeon or Dungeon Adventure) | 1977 | 1978 | Text adventure | Public domain software | Public domain | Robert M. Supnik / Infocom | Public domain software ports with source code based on the first "Dungeon" version of Zork, are available in various repositories.[139][140] Also, Infocom allowed the distribution of the early Fortran version. Original version from MIT.[141][142] | |
| ZZT | 1991 | 2023 | Action-adventure puzzle | MIT | no artwork | Potomac Computer Systems | Originally thought to be lost,[143] a source code backup for ZZT 3.0 surfaced and a modified version of it with third-party content removed was uploaded to GitHub by Adrian Siekierka, developer of Reconstruction of ZZT, under the MIT license with permission of Tim Sweeney, creator of the game.[144] |
Open-source games with free of charge data edit
Only the game engines in this table are developed under an open-source license, which means that the reuse and modification of only the code is permitted. The assets are provided free of charge to the final user, but with some restrictions. Note that both the engine and the game code must be available under a license approved by the OSI and/or the FSF, if it was made with a licensed engine.
| Title | First release | Source code release | Genre | Engine license | Content license | Original developer | Additional information |
|---|---|---|---|---|---|---|---|
| Allegiance (now FreeAllegiance) | 2000 | 2004 | real-time strategy and Space combat simulator | MIT (earlier Shared Source[145]) | Freeware | Microsoft Research | Released by Microsoft Research under a shared source license ("MSR-SSLA") 2004.[146] On July 27, 2017, Microsoft Research changed the license from MSR shared source license to MIT license.[147] |
| Amulets & Armor | 1997 | 2013 | first person role-playing video game | GPL-3.0-only | Freeware | United Software Artists | In 2013 Amulets & Armor was re-released as freeware on the game's official site and the source code under GPL-3.0-only on GitHub.[148][149] Work continues for ports to newer systems (Windows, MacOS) and general bug fixes.[150][151] |
| Ares (now Antares) | 1996 | 2008 | Space Strategy video game | LGPLv3[152] | CC BY-NC-SA/CC BY-NC-ND/Freeware | Nathan Lamont/Bigger Planet Software | Released in 2008. Under continued development for modern systems as "Antares" via GitHub.[153] |
| Avara | 1996 | 2016 | Shooter game | MIT | Freeware | Ambrosia Software / Juri Munkki | The MacOS classic game became open source in 2016 when Munkki released the source code upon the game's 20th anniversary.[154] |
| Buzz Aldrin's Race Into Space (now Race Into Space) | 1993 | 2007 | Simulation | GPLv2[155] | Freeware[156] | Strategic Visions/Fritz Bronner | A port of Buzz Aldrin's Race Into Space to modern operating systems. The license fell back to Bronner as he had a contract clause with Interplay stating that in case Interplay went bankrupt or no distribution happened for some time.[156] |
| Cart Life | 2011 | 2014 | Simulation | Artistic-2.0/MIT-like (engine/game code) | Freeware | Richard Hofmeier | In March 2014 the game was removed from all digital distributions and the source code and game was made available for free online, with Hofmeier saying he was finished supporting the game.[157] His webpage went later offline[158] but the source code was mirrored on GitHub.[159][160] |
| Corncob 3D | 1993 | 2016 | Flight simulator | Public domain software | Freeware | Pie in the Sky / Kevin Stokes | The game became around 2016 freeware and open source.[161] |
| Dink Smallwood | 1997 | 2003 | Action RPG | Zlib inspired own license[162] | Freeware[163] | Robinson Technologies | Source code published on July 17, 2003, from Seth Robinson.[164] 2008 Artwork published (without some sounds) under a Zlib license.[165] In October 2017 the HD version became fully open source and freeware, too.[166] The source code became available on GitHub shortly after.[167] |
| Gates of Skeldal | 1998 | 2008 | Dungeon crawler role-playing video game | GPL-3.0-or-later | Freeware | Napoleon Games | On 19 November 2007 the game was made freeware by the Czech developer, in 2008 the source code was released under GPL-3.0-or-later on a SourceForge repository.[168][169] Later it was translated by fans to English and ported to linux.[170] |
| Glider 4.0 | 1991 | 2016 | Flight simulator | MIT | Freeware | John Calhoun | On January 26, 2016, the source code for Glider 4.0 was uploaded to GitHub.[171] |
| Glider PRO | 1994 | 2016 | Flight simulator | GPL-2.0-only | Freeware | John Calhoun | On January 27, 2016, the source code, graphics, and sound data for Glider PRO were released on GitHub with the source code being licensed under the GNU General Public License v2.[172][173] |
| Gloom | 1995 | 2017 | FPS | unlicense | "for historical purposes" | Black Magic | In January 2017 the assembly and BlitzBasic 2 source code of the Amiga Doom clone Gloom was released as public domain software under unlicense on GitHub.[174] The assets were released "for historical and archiving purposes.".[175] |
| Gunocide II | 2000 | 2001 | Galaga-like 2D shooter | GPLv2 | Freeware | Alexander Bierbrauer and Oliver Weiler | Developed around 2000.[176] After being succesless commercially published via a publisher,[177] the game was released as freeware and under GPL. 2002 ported to Linux and hosted on SourceForge as "G2ex".[178][179] |
| H-Craft Championship | 2007 | 2015 | science fiction racing game | zlib license | Freeware | Irrgheist | H-Craft Championship was developed by the independent game studio Irrgheist[180] and released by Manifesto Games[181]/Akella in 2007.[182] In 2014, the developers released the game as freeware[183] and the source code under the zlib license in February 2015.[184][185] |
| Haunts: The Manse Macabre | 2012 | 2012 | turn based strategy | BSD-3-Clause[186] | CC BY-NC-SA | Rick Dakan | The 2012 with $29,000 crowdfunded[187] and in Go programmed game was put on GitHub after the money for further development run out.[188][189] While a volunteer keeps updating the almost finished prototype,[190] the against the Go 1.0 API build game fails to compile with newer compilers and Go versions. |
| Hypercycles | 1995 | 2017 | Shooter | GPL-3.0-only | Freeware | Bob Hays | Released in January 2017 on GitHub.[191][192] As August 16, 2020, the repository was removed from GitHub. The code has been re-uploaded on GitHub[193] |
| Infinity | 2002 | 2016 | RPG | GPL-3.0-or-later | CC BY-NC-ND 4.0 / CC BY-NC-SA 4.0 | Affinix Software | Developed in 2002 as commercial Game Boy Color title (~90% finished) the game was never published. Infinity was released as non-commercial freeware with source code in August 2016,[194][195][196] and after a successful Kickstarter campaign in August 2021, development was restarted by Incube8 Games.[197][198] |
| Iron Seed | 1994 | 2013 | Space trading and combat simulator | GPLv3 | Freeware | Channel 7 | Released as freeware by the authors to promote the development of Iron Seed 2 in the 2000s. Source opened under the GPL by the developers in 2013.[199] |
| Magic Land Island (now Pocket Island) | 2011 | 2012 | Casual game | MIT | CC BY-NC-SA | Wooga | Magic Land Island was launched during the GDC Europe in August 2011. In June 2012 the HTML5 game was open sourced under the name Pocket Island on GitHub under MIT license and with the assets under Creative Commons license CC BY-NC-SA.[200][201] |
| Marathon 2: Durandal (now Aleph One) | 1995 | 2000 | FPS | GPLv2 | Freeware | Bungie | Released by Bungie on January 17, 2000.[202] |
| Marathon Infinity (now Aleph One) | 1996 | 2011 | FPS | GPL-3.0-or-later | CC BY-NC-SA 3.0 | Bungie | Released by Bungie in 2011.[203] |
| Meridian 59 | 1995 | 2012 | MMORPG | GPL-2.0-only (excluding compression and audio libraries) | Freeware | Archetype Interactive | As of February 2010 Meridian 59 has been turned over to the original technical developers, Andrew and Chris Kirmse. On September 15, 2012, they released the game to the public as Freeware and most of the source code under the GPLv2 license.[204] |
| The Pit Puzzle | 1997 | 2011 | Puzzle game | Apache-2.0 | Freeware[205] | Abe Pralle / Plasmaworks | The DOS game source code was released around 2011 by the author Abe Pralle under Apache 2.0 License on GitHub.[206] |
| Postal | 1997 | 2016 | Top-down shooter | GPL-2.0-only | Freeware | Running with Scissors | In 2015 the Running with Scissors developers announced that they will release the source code of the game "if someone promises to port it to the Dreamcast."[207] In June 2016 the developers gave the source code to a community developer who ported the game to Linux for the OpenPandora handheld.[208][209] On December 28, 2016, the source code was released on Bitbucket under the GPLv2.[210][211] |
| Project Starfighter | 2001 | 2008 | Shoot 'em up | GPLv2[212] | Freeware[213] | Parallel Realities | |
| Star Control II (now The Ur-Quan Masters) | 1992 | 2002 | Action RPG | GPLv2 | CC BY-NC-SA 2.5 | Toys for Bob (Fred Ford / Paul Reiche III) | Source code of the 3DO version GPL-released in 2002.[214] |
| Star Ruler 2 | 2015[215] | 2018 | Real-time strategy, 4X | MIT | CC BY-NC 2.0 | Blind Mind Studios | Released on GitHub as an open-source project, including assets under the CC BY-NC (but not music) on July 22, 2018.[216][217] |
| Starshatter: The Gathering Storm | 2004 | 2011 | Space combat simulator | New BSD License | Freeware | Destroyer Studios / Matrix Games | Source code released by Destroyer Studios/Matrix Games on December 14, 2011.[218][219] |
| Strange Adventures in Infinite Space | 2002 | 2005/2009 | Space Roguelike | GPL-3.0-or-later | CC BY-NC 4.0 | Digital Eel | Source was released under GPL by Digital Eel in 2005.[220][221] Content became freeware 2009.[222] License changed to GPLv3 and assets to CC BY-NC-4.0 on May 18, 2020.[223] |
| Team 47: GoMan | 1997[224][225] | 1998 | Mech game | Public-domain software | Proprietary | 47-TEK | Released artwork and source code to public in May 1998.[226][227] As the Internet Archive has not saved the content of the now offline GoMan page in the end of the 1990s, currently there are no known mirrors on the web; the source code seems as of 2017 to be lost.[227] As of March 2022, source code has been uploaded to Github. |
| Tread Marks | 2000 | 2017 | Tank Combat/Racing | GPL-3.0-or-later | Freeware | Longbow Digital Arts / Seumas McNally | Won in 2000 the Seumas McNally Grand Prize. On January 20, 2017 the source code was released as open source on github.com and the game itself as freeware.[228][229] A port to Linux and MacOS is in progress.[230] In September 2017 a version for the Linux-based OpenPandora was released.[231] |
| Tribal Trouble | 2005 | 2014 | RTS | GPLv2 | Freeware | Oddlabs | In September 2014 the game's source code was released to the public on GitHub and is now open source under the GPLv2.[232] Development continues in a community fork.[233] |
| Tribes 2 | 2001 | 2012 | FPS | MIT/Proprietary (engine/game code) | Freeware | Dynamix | Many commercial titles were developed using the Torque engine.[234] GarageGames released Torque 3D under the MIT License on September 20, 2012.[235] The Tribes 2 source code beside the Torque engine is not available.[236] |
Open-source games edit
Only the game engines in this table are developed under an open-source license, which means that the reuse and modification of only the code is permitted. The assets are not provided for free and must be bought by the final user. Note that both the engine and the game code must be available under a license approved by the OSI and/or the FSF, if it was made with a licensed engine.
| Title | First release | Source code release | Genre | Engine license | Original developer | Additional information |
|---|---|---|---|---|---|---|
| Age of Pirates: Captain Blood | 2010 | 2022 | Action-adventure game / Hack and slash | GPL-3.0-or-later | 1C: Seawolf Studio | Source code of game engine was released on GitHub under GPLv3 on November 28, 2022.[237] |
| Age of Pirates 2: City of Abandoned Ships | 2009 | 2021 | Role-playing game | GPL-3.0-or-later | Akella | Source code of Storm Engine released on GitHub under GPLv3 in a 2021 and support Sea Dogs: To Each His Own and Age of Pirates 2: City of Abandoned Ships.[238][239] |
| Amnesia: A Machine for Pigs | 2013 | 2020 | Survival horror | GPL-3.0-or-later | The Chinese Room | On September 23, 2020, Frictional Games released the source code for this game.[240] Source code was released on GitHub under the GPLv3.[241] |
| Amnesia: The Dark Descent | 2010 | 2020 | Survival horror | GPL-3.0-or-later | Frictional Games | On September 23, 2020, Frictional Games released the source code for this game on its 10th release anniversary.[240] Source code was released on GitHub under the GPLv3.[242] |
| Analogue: A Hate Story | 2012 | 2013 | Visual novel | MIT/Public-domain software—Proprietary (engine/game code) | Love Conquers All Games | Developed using the Ren'Py engine, the game code for Analogue: A Hate Story was released on May 4, 2013 under a public-domain-equivalent license. The source code release includes the entire script of the game for context, but the script remains proprietary.[243] |
| Arx Fatalis (now Arx Libertatis) | 2002 | 2011 | RPG | GPL-3.0-or-later | Arkane Studios | The design of Arx Fatalis was heavily influenced by Ultima Underworld. Game source released by Arkane Studios on January 14, 2011.[244] Based upon this source code the formed Arx Libertatis-project created Fan-made patches and Source ports.[245][246] |
| Aquaria | 2007 | 2010 | Action-adventure | GPL-2.0-or-later | Bit Blot | Open sourced with Humble Indie Bundle.[247] |
| Blake Stone: Planet Strike | 1994 | 2013 | FPS | GPL-2.0-or-later[248] | Apogee Software | Released in 2013 to promote the sale of the Apogee Throwback Pack on Steam.[249][250] |
| Canabalt | 2009 | 2010 | Cinematic platformer | MIT/Proprietary (engine[251]/game code[252]) | Adam Saltsman | Released by Adam Saltsman in 2010.[253] |
| Catacomb | 1989 | 2014 | Top-down shooter | GPL-2.0-or-later | Flat Rock Software | Released by Flat Rock Software on June 5, 2014 on GitHub.[254] |
| Catacomb 3D | 1991 | 2014 | FPS | GPL-2.0-or-later | Flat Rock Software / id Software | Released by Flat Rock Software on June 5, 2014 on GitHub.[254] |
| The Colony | 1988 | 2023 | FPS | Apache-2.0 | Dave Smith | Source code for the PC, Mac and Amiga versions released by Smith on GitHub on June 6, 2023, with the source code under the Apache License 2.0.[255] |
| Command & Conquer, Command & Conquer: Red Alert | 1995 | 2020 | RTS | GPL-3.0-or-later | Westwood Studios | The games' code was released along with the Command & Conquer Remastered Collection in order to aid in the development of mods. It can be used to build mods for the remaster, but due to some missing bits that are substituted by the remaster's own (closed source) engine, it can not be used to directly re-build the original (unremastered) games from them.[256] However down stream projects such as Vanilla-Conquer have allowed source ports of the unremastered games to be developed by developing replacements for the missing code.[257] |
| Commander Keen in Keen Dreams | 1991 | 2014 | Platformer | GPL-2.0-or-later | id Software | In September 2014, after an Indiegogo crowdfunding campaign,[258] the game's source code was released on GitHub.[259][260] |
| CoreBreach | 2011 | 2012 | Racing game | MIT/GPL-2.0-only (engine/game code)[261] | CoreCode | Futuristic "anti-gravity" racing game with combat. Source was released after a sales quota was met.[261] |
| Cortex Command | 2012 | 2019 | Action game | AGPL-3.0-only | Data Realms LLC | The indie game was in development since 2001, which won an IGF award in 2009,[262] was finally released in 2012.[263] In July 2019 the source code was released under AGPL-3.0-only on GitHub.[264][265] As of end of 2019 the work on a community continuation, dubbed "Cortex-Command-Community-Project", is ongoing.[266] |
| Delver | 2012 | 2018 | First-person action roguelike dungeon crawl | Apache-2.0/zlib (engine/game code) | Priority Interrupt | Developed using the libGDX framework; on November 15, 2018, Chad Cuddigan released the source code under the GPLv2.[267] Changed to a modified version of the zlib license on November 23, 2018,[268] and changed to the regular zlib license on September 21, 2020.[269] |
| Descent 3 | 1999 | 2024 | FPS | MIT | Outrage Entertainment | On April 16, 2024, Kevin Bentley (one of the programmers of the game) released the source code for Descent 3 on GitHub,[270] under authorization of Matt Toschlog,[271] co-owner of the copyright holder of the game.[272] |
| Doom (3DO) | 1995 | 2014 | FPS | MIT | Logicware | On November 30, 2014, the source code of the 3DO Interactive Multiplayer port of the game was released by Rebecca Heineman (sole developer of the port) under an MIT license, a different license than the Doom version for Linux, and the Atari Jaguar port.[273][274][275][276] |
| Doom and Doom II: Hell on Earth (Linux) | 1993/1994 | 1997/1999 | FPS | GPL-2.0-or-later | Id Software | Game source released on December 23, 1997, placed under GPL-2.0-or-later on October 3, 1999. |
| Doom (SNES) | 1995 | 2020 | FPS | GPL-3.0-or-later | Sculptured Software | On July 14, 2020, Randy Linden uploaded the source code for his Super Nintendo Entertainment System conversion of Doom to GitHub.[277] |
| Doom 3 | 2004 | 2011 | FPS | GPL-3.0-or-later | Id Software | Game source released on November 22, 2011.[278] |
| Doom 3: BFG Edition | 2012 | 2012 | FPS | GPL-3.0-or-later | Id Software | Source code released on November 26, 2012 on GitHub.[279] |
| DROD series | 1997 | 2000 | Puzzle game | MPLv1.1[280] | Webfoot / Erik Hermansen | After the author reacquired the rights to the game from the original publisher Webfoot,[281] he released the source code of the game engines.[280][282] The source code releases include DROD: King Dugan's Dungeon, DROD: Journey to Rooted Hold, DROD: The City Beneath, DROD: Gunthro and the Epic Blunder, DROD: The Second Sky, and DROD RPG: Tendry's Tale without its media assets.[283] |
| Eldritch | 2013 | 2014 | FPS, roguelike | zlib License | Minor Key Games | In April 2014, the game's source code was released to the public under a permissive zlib license. Content still proprietary and game being sold.[284][285] |
| Flotilla | 2010 | 2020 | 3d tactic game | Ms-PL/zlib (engine/game code) | Blendo Games | Indie game developer Blendo games released the source code to Flotilla on its 10th release anniversary.[286][287] The source code is Zlib licensed on GitHub, but assets are not included.[288] |
| Gish | 2004 | 2010 | Action | GPL-2.0-or-later | Cryptic Sea | Source opened with Humble Indie Bundle by Wolfire Games.[289][290] |
| Glypha III | 1990s | 2016 | Arcade | MIT | John Calhoun | On January 27, 2016, the source code, graphics, and sound data for Glypha III were released on GitHub with the source code being licensed under the MIT License.[171][291] Updated ports for MacOs and iPhone were created afterward.[292][293][294] A cross-platform OpenGL based port was released around May 2018 on GitHub.[295] |
| Good Robot | 2016 | 2020 | Multidirectional shooter | MIT | Pyrodactyl Games | On August 3, 2020, Arvind Raja Yadav from Pyrodactyl Games released the source code for three of their games (Unrest, Will Fight for Food and Good Robot) under the MIT License on GitHub.[296] |
| Hammerfight | 2009 | 2011 | 2D physic based combat game | zlib license[297] | Konstantin Koshutin | For the third Humble Indie Bundle[298][299] Ryan C. Gordon ported the underlying game engine, "Haaf's Game Engine", to Linux and Mac OS X, and released source code under the zlib license.[300][301] Relish Games released the original version of HGE 1.8.1 for Windows/DirectX to GitHub under zlib license, too.[302] |
| Heretic | 1994 | 1999 | FPS | GPL-2.0-only | Raven Software | Game source released on January 11, 1999 under a very restrictive license,[303][304] relicensed to GPL on September 4, 2008.[305][306][307] The ACC script compiler was not included in the GPL re-release. |
| Hexen: Beyond Heretic | 1995 | 1999 | FPS | GPL-2.0-only | Raven Software | Game source released on January 11, 1999 under a very restrictive license,[303][304] relicensed to GPL on September 4, 2008.[305][306][307] The ACC script compiler was not included in the GPL re-release. |
| Hexen II | 1997 | 2000 | FPS | GPL-2.0-only | Raven Software | Game source released on November 10, 2000.[308] |
| Hovertank 3D | 1991 | 2014 | FPS | GPL-2.0-or-later | Flat Rock Software/id Software | Released by Flat Rock Software on June 5, 2014 on GitHub.[254] |
| Lemma | 2014 | 2014 | Voxel FPS open world parcour[309] | MIT | Evan Todd | Despite an unsuccessful crowdfunding campaign in 2014,[310] Lemma was released commercially by the developer DRM-free and also on Steam. The source code is openly developed and available on GitHub under a MIT license.[311][312] |
| Little Big Adventure and Little Big Adventure 2 | 1994/1997 | 2021 | Action-adventure | GPL-2.0-only | Adeline Software International | Source code released on GitHub under the GPL-2.0-only license by 2.21, the current copyright holders.[313] |
| Machines: Wired for War | 1999 | 2020 | Real-time strategy | GPL-3.0-or-later | Charybdis/Nightdive Studios | The game was released by the new rights holder Nightdive Studios in 2020.[314] The source code is under GPLv3 on GitHub.[315] The assets are available too from the original developer's webpage.[316] |
| Monster RPG 2 | 2010 | 2012 | JRPG | zlib License | Nooskewl | After a successful Indiegogo campaign, released by Nooskewl under a Public domain like license ("Give it Your Own License") on November 11, 2012.[317][318] Later changed to zlib license, and the content sold again to be able to pay the server bills.[319] |
| Myst Online: Uru Live | 2007 | 2010 | MMORPG | GPLv3 | Cyan Worlds | "Myst Online: Uru Live" struggled to attract subscribers and was canceled after its first year. Cyan release the game as an open source game in 2010.[320] |
| Natural Selection | 2002 | 2014 | FPS | GPLv2 (most code) / custom (external libraries)[321] | Unknown Worlds Entertainment | In January 2014 Unknown Worlds released the source code for download on GitHub.[322] |
| The Operative: No One Lives Forever | 2000 | 2010 | FPS | GPL | Monolith Productions | In 2001, Monolith Productions released a set of editing tools for No One Lives Forever that included the level editor and model editor used for development.[323] The team also released the source code for NOLF (version 1.003 on Windows) that year to "support the fan base by offering the tools to create their own levels".[324][325] It is available both as a download, as well as on the Game of the Year Edition CD-ROM.[323] Years later around 2013 Lithtech source code became available on GitHub under GPL,[326] and work for merging game code and engine started.[327] |
| No One Lives Forever 2: A Spy in H.A.R.M.'s Way | 2002 | 2011 | FPS | GPLv2[328] | Monolith Productions | Source code released by Monolith Productions/Sierra Entertainment as part of a modding toolkit.[329] |
| Overgrowth | 2017 | 2022 | Action | Apache-2.0 | Wolfire Games | On April 21, 2022, Wolfire Games released the source code to Overgrowth on GitHub under the Apache License 2.0.[330] |
| Pararena 2 | 1992 | 2016 | Action sport game | MIT | John Calhoun | On January 27, 2016, the source code was released on GitHub licensed under the MIT license.[331][332] |
| Penumbra: Overture | 2007 | 2009 | Survival horror with FPS aspects | GPL-3.0-or-later | Frictional Games | Developed by Swedish[333] developer Frictional Games, the game blends the genres of survival horror, first-person shooter, and adventure. Open sourced with Humble Indie Bundle.[334] |
| Quake | 1996 | 1999 | FPS | GPL-2.0-or-later | Id Software | Game source released on December 21, 1999. |
| Quake II | 1997 | 2001 | FPS | GPL-2.0-or-later | Id Software | Game source released on December 22, 2001. |
| Quake III Arena | 1999 | 2005 | FPS | GPL-2.0-or-later | Id Software | Game source released on August 19, 2005. |
| Quake 4 | 2005 | 2021 | FPS | GPL-2.0-or-later | Raven Software | Adapted to the GPL id Tech 4 source code from Doom 3 with some issues remaining.[335] |
| Raptor: Call of the Shadows | 1994 | 2023 | Scrolling shooter | GPL-2.0-or-later | Cygnus Studios | Released on October 1, 2023 on GitHub.[336] |
| Red Dog: Superior Firepower | 2000 | 2022 | Shooter | MIT | Argonaut Games | Source code uploaded on GitHub on September 26, 2022 under the MIT license by Matt Godbolt (one of the three programmers of the game) under authorization of Jez San, founder of Argonaut Games.[337] |
| Return to Castle Wolfenstein | 2001 | 2010 | FPS | GPL-3.0-or-later | Gray Matter Studios/Nerve Software | The source code for Return to Castle Wolfenstein and Enemy Territory was released under the GNU General Public License (GPL) on August 12, 2010.[338][339] |
| Revenge of the Titans | 2010 | 2011 | Tower Defense, RTS | BSD-3-Clause | Puppy Games | Java based game. Source code was released by Puppy Games with the success of the second Humble Indie Bundle.[340] |
| Rise of the Triad | 1994 | 2002 | FPS | GPL-2.0-or-later | Apogee Software/3D Realms | Game source released on December 20, 2002.[341] |
| Serious Sam (Serious Engine) | 2001 | 2016 | FPS | GPL-2.0-only | Croteam | In March 2016, Croteam released Serious Engine v1.10 as free and open-source software on GitHub under the GNU General Public License.[342][343] |
| Seven Kingdoms II | 1999 | 2009 | RTS | GPLv2 | Enlight | Source code released in August, 2009. |
| Shogo: Mobile Armor Division | 1998 | 1998 | FPS | GPL | Monolith Productions | In 1998, SDK released the game logic for modders.[344] The Lithtech engine was not included as source code. Around 2013, Lithtech's source code became available on GitHub under the GPL,[326] and the work of merging the game logic and the engine started.[327] As of the end of 2019, this reworked NOLF2/LithTech engine reached a buildable state under Windows, and the work continues.[345] |
| Siege of Avalon | 2000 | 2003 | RPG | LGPL | Digital Tome | Source code released June 23, 2003.[346] Later one of the original developers announced the preparation of a re-release of SOA, but nothing came out of it.[347] In September 2017 a community developer managed to fix the dependencies of the Open source release, recompile the executable, fixing several bugs and introducing higher resolution support for the game.[348] |
| Soul Ride | 2000[349] | 2003 | Snow board simulation/sport game | GPLv2[350] | Slingshot Game Technology | On 20 Jan 2003 Soul Ride's game engine source code was released to allow ports to alternative OSes.[351] |
| Spacebase DF-9 | 2013 | 2015 | Space simulator | CPAL | Double Fine | After Double Fine ended the support of the controversy ridden and incomplete game on end of 2014,[352] fans have been working to continue the game's development with the availability of the source code in May 2015 under the CPAL open-source license.[353] First patch became available in October 2015.[354] |
| Spear of Destiny | 1992 | 1995 | FPS | GPL-2.0-or-later[355] | id Software | The source code of Wolfenstein 3D, which also covered Spear of Destiny, was released on July 21, 1995. |
| Spectromancer | 2008 | 2020 | Turn-based strategy | BSD-3-Clause/Proprietary (engine/game code) | Three Donkeys LLC/Apus Software | On March 4, 2020, Ivan Polyacov from Apus Software released the source code to the Apus Game Engine, the in-house game engine by Apus Software used for Spectromancer and Astral Heroes after reaching the $50 tier on his Patreon.[356] The game code to Astral Towers was also released to patrons.[357][358] |
| Speed Haste | 1995 | 2012 | racing video game | public domain like license | Javier Arevalo Baeza | In 2012 the game's developer Javier Arevalo Baeza released the Borland C source code (minus some commercial library part) for "you can do whatever you want with this code" on GitHub.[359] |
| Star Wars Jedi Knight II: Jedi Outcast | 2002 | 2013 | First/Third-person shooter | GPL-2.0-only | Raven Software | Release of the source code by Raven Software and Activision coincided with the closing of LucasArts by Disney.[360] |
| Star Wars Jedi Knight: Jedi Academy | 2003 | 2013 | First/Third-person shooter | GPL-2.0-only | Raven Software | Release of the source code by Raven Software and Activision coincided with the closing of LucasArts by Disney.[360] |
| System Shock | 1994 | 2018 | FPS | GPL-3.0-or-later | Night Dive Studios | In April 2018 the Mac version's source code was released by Night Dive on GitHub,[361] fulfilling a 2016 promise.[362][363][364] After one month of development, a cross-platform source port, called "Shockolate", for modern compilers and platforms was released by community developer Chad Cuddigan.[365] |
| To Heart 2 | 2004 | 2006 | Visual novel | GPLv2 | Aquaplus | Its source code was released by Aquaplus under the GNU General Public License on December 22, 2005, along with the source code for Arurū to Asobo!!, Tears to Tiara, and Kusari.[366][367] This decision was made due to the inclusion of Xvid derived code; Xvid being distributed under the same license.[366][367] The source code for all four games is distributed upon request in CD-R format.[366] A copy of the original source code is hosted on GitHub,[368] as also an continued engine project.[369] |
| To the Moon | 2011 | 2014 | role-playing game | GPL-2.0-or-later | Freebird Games | To the Moon was developed using RPG Maker XP engine in 2011. In January 2014 To the Moon was also released for OS X and Linux with the Humble Bundle X.[370] Edward Rudd ported the game with the GPLv2 RPG Maker XP game engine recreation MKXP,[370][371] other ports followed later.[372] Also a successor game by Freebird games, "A Bird Story", was ported to Linux under usage of MKXP.[373] |
| Toki Tori 2+ | 2013 | 2021 | puzzle platform game | GPL-2.0-only | Two Tribes | On December 17, 2021, Two Tribes released the source code to their in-house engine used for games like Toki Tori 2+ and Rive under the GPL-2.0-only license on GitHub.[374] |
| Unrest | 2014 | 2020 | Role-playing video game | MIT | Pyrodactyl Games | On August 3, 2020, Arvind Raja Yadav from Pyrodactyl Games released the source code for three of their games (Unrest, Will Fight for Food and Good Robot) under the MIT License on GitHub.[296] |
| Urban Chaos | 1999 | 2017 | Action-adventure game | MIT | Mucky Foot | In May 2017 Mucky Foot's Mike Diskett released the source code of Urban Chaos under the MIT license on GitHub.[375] |
| Vangers | 1998 | 2016 | racing and role-playing genre | GPLv3 | K-D Lab | In March 2016, Vangers source code was released[376] under GPLv3 license. Data was not freed though, so one still needs data files from Steam or GOG.com released in order to run the game. |
| Wolfenstein 3D | 1992 | 1995 | FPS | GPL-2.0-or-later[355] | id Software | The source code of Wolfenstein 3D, which also covered Spear of Destiny, was released on July 21, 1995. |
| Wolfenstein: Enemy Territory | 2003 | 2010 | FPS | GPL-3.0-or-later | Splash Damage/id Software | Game source released on August 12, 2010.[377][339][338] |
| World in Conflict (server code) | 2007 | 2017 | Real time strategy game | GPL-2.0-or-later[378] | Ubisoft | Game source released in 2017 by ubisoft after support ended in 2014.[379] |
Source-available games with free of charge data edit
Video games in this table are source-available, but are neither open-source software according to the OSI definition nor free software according to the Free Software Foundation. If the source code is given out without specified license or public domain waiver it has legally to be considered as still proprietary due to the Berne Convention. The assets are provided free of charge to the final user, but with some restrictions.
| Title | First release | Source code release | Genre | Engine license | Content license | Original developer | Additional information |
|---|---|---|---|---|---|---|---|
| Agony | 1992 | 2020 | Shoot 'em up | non-commercial use | Freeware | Art & Magic | Around 2010, graphic artist Franck Sauer started to offer the game's binary files (ADF format) for free download on his personal webpage, making the game Freeware.[380] On July 4, 2020, Yves Grolet (programmer of the game) uploaded all his Amiga development files (which included full source code for Agony) to WeTransfer.[381] |
| Anacreon: Reconstruction 4021 | 1987 | 2004 | 4x game | no license given | Freeware | George Moromisato | Developed by George Moromisato in 1987. Around 2004 the source code of the DOS version 2.00 was released.[382] |
| Beneath a Steel Sky | 1994 | 2003 | Point and click adventure | Beneath a Steel Sky Freeware License | Beneath a Steel Sky Freeware License | Revolution Software | The assembly language source code of the game was made available to the public and ScummVM in August 2003.[383][384] The source code availability made it possible for the ScummVM project to support the game, which allows the game to be played on Windows, OS X, Linux, Windows CE and other compatible operating systems and platforms. |
| Beyond Castle Wolfenstein | 1985 | 2005 | Stealth game | no license given | Freeware | Silas Warner | The reconstructed source code and the ported game was released by Silas Warner's widow in 2005.[385] |
| Beyond Protocol (now After Protocol) | 2008 | 2011 | persistent, space MMORTS | non-commercial public license | Freeware | Dark Sky Entertainment | Initial design of Beyond Protocol began in 1991.[386] A scaled up beta program began Nov 15th 2007[387] with an open-beta in 2008. When due to financial issues the game has been shut down, the source code was released on 4 May 2011 on SourceForge to the public.[388] Based on this source code, community organized development continues until today as After Protocol.[389] |
| Bob's Game | 2004 | 2016 | puzzle, action RPG | Proprietary | Freeware | Robert Pelloni | In August 2016 the source code of the game was released on GitHub under a non-commercial source available software license,[390] to allow the community to contribute. The author claims that he wrote the game originally in C, switched then to Java, and later converted it with an automatic code converter to C++.[391] |
| Carnivores 2 | 1999 | 2013 | Simulation | Proprietary | Freeware | Action Forms | A version from 2013 is available on assembla.[392] Around 2017 the source code was released via Moddb.[393] |
| Crystal Mines | 1989 | 2011 | Arcade | Custom permissive license | Freeware | Ken Beckett / Color Dreams | In August 2011 Ken Beckett, the programmer of the NES game Crystal Mines, released the source code under a custom permissive license to the public.[394][395] Artwork still proprietary but can be shared for non-commercial, personal use.[396] |
| Digger | 1983 | 2004 | Arcade | Proprietary | Freeware | Windmill Software | The original source code became available in September 2004 "for historical interest" (together with source code of other Windmill Software games as Styx).[397][398] There is also an earlier free software reverse engineered variant available by Andrew Jenner, called Digger Remastered, ported for many platforms.[399] |
| Dungeons of Daggorath | 1982 | 2001 | 3D Dungeon crawler | Freeware | Freeware | DynaMicro / Douglas J. Morgan | After years of no further distribution from the publisher Radio Shack of the game, the distribution rights fell back to the developers. Morgan released game around 2001 under a freeware like license to the public, also offering the source code.[400][401] Following, the game's community has created ports for PC,[402] Linux,[403] RISC OS[404] and PSP.[405] |
| Enemy Nations | 1997 | 2005[406] /2006[407][408] | RTS | own non-commercial license[409] | non-commercial Freeware[409] | Windward Studios | Game source and artwork was released by Windward Studios under a non-commercial license around 2005/2006. |
| Fort Apocalypse | 1982 | 2015 | action | CC BY-NC-ND 2.5 | CC BY-NC-ND 2.5 | Steve Hales / Synapse Software | In 2007 the Atari 8-bit game was relicensed to a CC BY-NC-ND 2.5 by Steve Hales and released on IgorLabs.[410] On April 23, 2015, Steve Hales released the assembler source code to Fort Apocalypse on GitHub, also under CC BY-NC-ND 2.5, for historical reasons.[411] |
| Free Fall | 1983 | 1999 | Beat 'em up | ? | Freeware | Ian Bell / Acornsoft | In 1999, developer Ian Bell released the video game's BBC Micro assembly source code on his website.[412] Semi-serious he considers it the first ever Beat 'em up video game. |
| Flow | 2006 | 2009 | Life simulation | ? (For educational purposes) | Freeware | Thatgamecompany / Jenova Chen | Around 2009 the flash source code was made available for educational purposes by the developers.[413][414] |
| HoverRace | 1996 | 2008 | Racing | originally time limited license / later non-commercial GrokkSoft HoverRace SourceCode License.[415][416] | Freeware | GrokkSoft | Was first published under a time-limited license. In 2008 re-newed with an infinite duration license.[417] |
| In Pursuit of Greed | 1996 | 2014 | FPS | non-commercial use, "for educational and personal use only" | Freeware (non-commercial) | Mind Shear Software | Based on Softdisk Publishing's "Raven engine" which powered also ShadowCaster. The game was released (including the engine) later by the developer as non-commercial freeware in 2014.[418][419][420] |
| Kiloblaster | 1992 | 2008 | Arcade | Own license[421] | Freeware (with additional restriction) | Epic MegaGames | Allen Pilgrim declared the registered version freeware and released also the source code on August 4, 2008.[422][423] |
| Kumquat & Cantaloupe | 1996 | 2012 | Maze | undefined | Freeware | Dave Schofield | The Amiga games Kumquat & Cantaloupe, originally released as shareware titles, were re-released as freeware with source code included by the author in November 2012.[424][425] |
| Magus | 1995 | 2014 | Rogue-like | Proprietary | Freeware | Ronny Wester | Around 2014 archived on GitHub from other now offline sources.[426] A SDL port is in progress.[427] In 2000 Wester released also the Borland Pascal 7 source code of Cyberdogs (excluding some libraries he had licensed) on his website.[428] |
| Roboforge | 2001 | 2008 | Multiplayer Strategy game | "RoboForge, Personal, Non-Commercial Use End User License" | Freeware | Liquid Edge | Announced the game in July, 2000[429] by Liquid Edge the game was released on May 23, 2001.[430] From July 2008 RoboForge became an Open Source project with the source code for the Java-based client and server under a non-commercial license and as freeware.[431] The game's community continues development. |
| Rocky Racers | 2002[432] | 2004[433] | Racing game | Non-Commercial license | Freeware | Positech Games | Released around 2002 by Positech Games, the game's C++ source code was released in July 2004 to the public for free.[433] |
| Savage: The Battle for Newerth | 2003 | 2007 | online Real-time strategy, FPS | no license/proprietary | Freeware[434] | S2 Games | The game was turned freeware by S2 Games on September 1, 2006. In 2007 the source code became available to the game community,[435] who now continues development.[436] The game can be played on Windows, Mac OS X and Linux. |
| Sea Dragon | 1982 | 2015 | Scrolling shooter | ? | Public-domain software | Adventure International | In 1995, Wayne Westmoreland (co-designer of the game) placed the original TRS-80 binaries for Sea Dragon in the public domain.[437] On December 19, 2015, Kevin Savetz uploaded the source code for the Atari 8-bit version of Sea Dragon under no license to the Internet Archive with permission of Russ Wetmore, developer of the port.[438] |
| Stellar Conquest III: Hostile Takeover | 1994[439] | 2006 | Stellar Conquest inspired Space simulation | open source freeware (non-commercial) | Freeware (non-commercial redistribution allowed) | NecroBones / Ed T. Toton III | The Turbo Pascal 6 source code for the VGA DOS game was released in February 2006 together with the game itself as freeware by the developer.[440] |
| Stellar Frontier | 1997 | 2008 | Space simulation | STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE (non-commercial license)[441] | STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE (non-commercial license) | Stardock | Stellar Frontier was developed by Doug Hendrix in 1995 and was later licensed and published by Stardock. On August 4, 2006, Stardock Systems closed the official master server. On November 18, 2008, the game source code was released under an own non-commercial license.[442] As result, the game's community took over the support of the game and improved the game, fixed the bugs and security holes with self-made patches.[443] |
| Treasures of a Slaver's Kingdom | 2007 | 2010 | Z-machine Text adventure game | Freeware | Freeware | Cumberland Games & Diversions | S. John Ross released the commercial Treasures of a Slaver's Kingdom, which won the XYZZY Award 2007 for the best NPC, in 2010 with Z-machine source code as freeware.[444] More source code of text adventure from the 1970s and 1980s are available at the archive.[445] |
| World Train Royale | 2009 | 2011 | Tycoon game | ? | Freeware | Versus Software | Sold around 2009 for 10 dollars,[446] the game source code was released on 26 June 2011 on SourceForge.[447][448] |
| Xargon | 1993 | 2008 | Platformer | own license[421] | Freeware (with additional restrictions) | Epic MegaGames | Game source released in 2008 by the programmer Allen Pilgrim.[449] A SDL port followed later by Malvineous.[450] |
Source-available games edit
Video games in this table are source-available, but are neither open-source software according to the OSI definition nor free software according to the Free Software Foundation. If the source code is given out without specified license or public domain waiver it has legally to be considered as still proprietary due to the Berne Convention. The assets are not provided for free.
| Title | First release | Source code release | Genre | Engine license | Content license | Original developer | Additional information |
|---|---|---|---|---|---|---|---|
| 3-D Ultra Pinball: Thrill Ride | 2000 | 2020 | Pinball | Proprietary | Proprietary | Left Field Productions | On May 13, 2020, Dave Ashley added the source code of the Game Boy Color port to his Game Boy Color development repository.[451] |
| Airline Tycoon | 1998 | 2015 | Simulation game | Proprietary[452] | Commercial | Spellbound Entertainment | On 24 March 2015 Airline Tycoon Deluxe was re-released on the digital distribution platform gog.com, including the source code.[453] |
| Alien 3 | 1992 | 2019 | Run and gun | Proprietary | Proprietary | Probe Software | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 version of the game to GitHub.[454] |
| Alien Breed 3D II: The Killing Grounds | 1996 | 1997 | FPS | ? | Proprietary | Team17 | In March 1997 Team17 made the source code of Alien Breed 3D and Alien Breed 3D II freely available on the cover CD of Amiga Format magazine issue 95.[455][456][457] |
| Alien vs Predator (Atari Jaguar game) | 1994 | 2008 | FPS | ? | Proprietary | Rebellion Developments | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Aliens versus Predator | 2000 | 2001[461] | FPS | Own non-commercial license[462] | Proprietary | Rebellion Developments | Source code released by Rebellion Developments 2001. An unofficial patch project for the PC version, based on the source code, was released and is still updated.[461] |
| Alpha Waves | 1990 | 2009 | early 3D exploration game with platform aspects | ? | ? | Christophe de Dinechin | Released in 1990 as one of the earliest 3D games[463] with full 6-axis degree of freedom. In 2009, author Christophe de Dinechin released the complete assembly and GFA BASIC source code of the Atari ST version.[464][465] There is also a started PC port in C++ on SourceForge by the original author.[466][467] |
| Altered Beast | 1989 | 2019 | Beat 'em up | Proprietary | Proprietary | Software Studios | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub.[454] |
| Anachronox | 2001 | 2001 (partly) | RPG | Proprietary | Proprietary | Ion Storm | Some bits of code distributed with the official editor.[citation needed] |
| Anodyne | 2013 | 2020 | Action-adventure | Anodyne License | Anodyne License | Analgesic Productions | On April 4, 2020, Melos Han-Tani from Analgesic Productions released the source code of Anodyne under a custom permissive license.[468][469] |
| Army Men III | 2013 | 2018 | Third-person shooter | Non-commercial use | Freeware | Neotl Empire | Army Men III was released in early access in 2013 and under development until its cancellation in 2016. Two years later, the unfinished game was released as open source on SourceForge in April 2018.[470] |
| Atomic Robo-Kid | 1990 | 2019 | Scrolling shooter | Proprietary | Proprietary | Activision | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub.[454] |
| Attack of the Mutant Camels | 1989 | 2012 | Scrolling shooters | ? | ? | Jeff Minter | In 2012 the assembly language source code of the Konix version of the game was released on GitHub.[471][472] |
| Aztaka | 2009 | 2011 | Action role-playing game | Proprietary | Citérémis | In 2011 Independent game developer Citérémis released a "Developer's Edition" of Aztaka for $9.99 which included also the source code of the game.[473][474] | |
| Balance of Power | 1985 | 2013 | Government simulation game | ? | ? | Chris Crawford | In August 2013 Chris Crawford released source code of several of his games from his career to the public,[475] fulfilling a GDC 2011 given promise.[476] Beside Balance of Power he released all the source code he could recover, for instance Trust & Betrayal: The Legacy of Siboot, Excalibur, Gossip, Eastern Front (1941), Scram and Legionnaire. |
| Batman Returns | 1993 | 2015 | sidescrolling Beat 'em up | for educational purposes | for educational purposes | ACME / Chris Shrigley | In March 2015 programmer Chris Shrigley, who worked on the Sega CD version, found the Batman Returns source code and released it for educational purposes to the public.[477] He released also the source code of Magician, Cliffhanger, Gargoyles and some other games from his working career.[478] |
| Disney's Beauty and the Beast: A Board Game Adventure | 1999 | 2020 | Board | Proprietary | Proprietary | Left Field Productions | On May 13, 2020, Dave Ashley added the source code of the game to his Game Boy Color development repository.[479] |
| Blood II: The Chosen | 1998 | 1999 | FPS | Proprietary | Proprietary | Monolith Productions | In 1999, SDK released the game logic for modders.[480] The LithTech engine was not included as source code. |
| Blue Max | 1983 | 2016 | Scrolling shooter | Proprietary | Proprietary | Bob Pollin | Assembly source code released in 2016 by the author Bob Pollin in the Atariage forum.[481] On the Atariage forum source code of many more games was released.[482][483][484] |
| Breakout 2000 | 1996 | 2008 | Action | Proprietary | Proprietary | MP Games | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Broken Sword: The Shadow of the Templars and II: The Smoking Mirror | 1996/1997 | 2003 | Point and click adventure | Proprietary | Proprietary | Revolution Software | The source code of the games was made available to ScummVM in 2003.[485] |
| Call to Power II | 2000 | 2003 | turn-based strategy game | Non-commercial own license[486] | Proprietary | Activision | Civilization clone. Source opened to the apolyton community to allow support with Community patches.[487] |
| Checkered Flag | 1994 | 2008 | Racing | Proprietary | Proprietary | Rebellion Developments | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Civilization IV | 2005 | 2006 (partly) | turn-based strategy | Proprietary | Proprietary | Firaxis Games / 2K Games | In April 2006 the developers released the source code of the core game mechanic to the public with a Software Development Kit.[488][489] Additionally to the released source code, as game data and rules are stored in XML files and most of the game is written in Python, much (but not all) of the game is "open" and easily customizable.[490] The game's community produced later many mods, total conversions and optimization patches for the game.[491] |
| Civilization V | 2010 | 2012 (partly) | turn-based strategy | Proprietary | Proprietary | Firaxis Games / 2K Games | In Fall 2012 the developers released the source code of the core game DLL.[492] The game's community produced later a community patch project.[493][494] |
| Club Drive | 1994 | 2008 | Racing | Proprietary | Proprietary | Atari Corporation | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Contract J.A.C.K. | 2003 | 2003 | FPS | Proprietary | Proprietary | Monolith Productions | Game code distributed with the official editor (www.mpgh.net).[citation needed] |
| Conquest: Frontier Wars | 2001 | 2013 | Space Real-time strategy | Proprietary | Proprietary | Fever Pitch Studios | On December 9, 2013, the source code was bundled with every copy of the game purchased on GOG.com.[495][496] |
| Cook, Serve, Delicious! | 2012 | 2016 | Business simulation game | Proprietary | Proprietary | Vertigo Gaming | Source code released in the Humble GameMaker Bundle on September 6, 2016.[497][498][499] |
| Crazee Rider | 1987 | 2019 | Racing | Proprietary | Proprietary | Superior Software | In November 2018 the source code of Crazee Rider in BBC Micro 6502 assembly language was released by Kevin Edwards, designer of the game.[500] In April of the following year the source code for the Acorn Electron version was also released.[501] |
| CryEngine 5 | 2002[502] | 2016 | FPS | ? | NA | Crytek | In 2016 Crytek released their engine as pay-what-you-want including the source code to the public.[503][504] |
| Crysis | 2007 | ? | FPS | Proprietary | Proprietary | Crytek | Game code was officially released with the SDK.[citation needed] |
| Crysis 2 | 2011 | ? | FPS | Proprietary | Proprietary | Crytek | Game code was officially released with the SDK. |
| Cybermorph | 1993 | 2008 | Shooter | Proprietary | Proprietary | Attention to Detail | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Daikatana | 2000 | 2015 | FPS | ? | Proprietary | Ion Storm / John Romero | Lacking any further official support after the closure of Ion Storm's Dallas office in 2001, John Romero gave the game's source code to community members, allowing them to develop additional platform ports and bug fixes.[505][506] |
| DarkSpace | 2001 | 2009 | MMO, Real-time strategy | multiple, self-written licenses.[507] | Proprietary | Palestar | DarkSpace's game engine called Medusa released by Palestar under multiple licenses.[508] |
| Death and Taxes | 2020 | 2020 | Simulation game | Proprietary/MIT (engine[509]/game code) | Proprietary | Placeholder Gameworks | After selling well the indie game's Unity source code was released on GitHub[510] to help other developers.[511][512] |
| Death Ray Manta | 2012 | 2015 | Arena shooter | Proprietary | educational purposes | Bagfull of Wrong / Rob Fearon | The GameMaker Studio based game's source code was released in 2015 with a Humble Indie Bundle.[513] The assets followed in 2016.[514] |
| Descent, Descent II | 1995/1996 | 1997/1999 | space 3D FPS | own license[515] | Proprietary | Parallax Software | Game source released by Parallax Software in 1997 (Descent 1)[516] and 1999 (Descent 2).[517] Descent 3 source code seems to be in hands of Rebecca Heineman and were considered 2014 for a release.[518] |
| Deus Ex (video game) | 2000 | ? | FPS | Proprietary | Proprietary | Ion Storm | Headers and some code distributed with the official SDK.[citation needed] |
| Discworld and Discworld II | 1995 | 2008 | point-and-click adventure game | Proprietary | Proprietary | Teeny Weeny Games | First announced for release around 2005 by Terry Pratchett,[519] source code became in 2008 available to the ScummVM developers.[520] The code was fast integrated into ScummVM.[521] |
| Disney's Aladdin | 1993 | 2017 | Platformer | Proprietary | Proprietary | Disney | Around 2017 the source code of the game became available to "The Video game history foundation", which wrote a review of the technique of the game based on the code.[522] |
| Dog Daze | 1981 | 2014 | Arcade game | Proprietary | Proprietary | Gray Chang | In 2014 Gray Chang released the source code of his Atari 400/800 games Dog Daze, Dog Daze Deluxe, Bumpomov's Dogs, and Claim Jumper.[523] Available at the Internet Archive. |
| Doom (Jaguar) | 1994 | 2003 | FPS | Proprietary | Proprietary | Id Software | On April 27, 2003, the source code of the Atari Jaguar port of the game was released by Albert Yarusso of AtariAge with permission of John Carmack.[524] |
| Duke Nukem 3D | 1996 | 2003 | FPS | Build license/GPLv2+ (engine[525]/game code) | Proprietary | 3D Realms / Ken Silverman | Game source released on April 1, 2003.[526] Update builds and source ports like eduke32 followed by the game's community.[527] |
| Dungeon Defenders | 2010 | 2011 | Tower defense | Proprietary | Proprietary | Trendy Entertainment | In November 2011 there was a "development kit" released as free DLC which included the game's source code.[528] |
| Elite | 1984 | 1999 | Space trading game | Proprietary | Freeware | Ian Bell, David Braben | In November 1999, developer Ian Bell released on the game's 15th birthday the BBC Micro assembly source code on his website.[529][530] Following that, Christian Pinder created a platform-neutral[citation needed] C version from the released BBC Micro version, called Elite: The New Kind (E-TNK; sources were removed in 2003 on David Braben request).[531][532] In 1999–2000 a dispute occurred between Ian Bell and David Braben regarding Bell's decision to make available all versions of the original Elite.[533] The dispute has since ended and the various versions are now available again on Bell's site.[534][535] |
| Enemy Engaged: RAH-66 Comanche vs. KA-52 Hokum | 2000 | 2003 | Helicopter Flight simulator | own license[536] | Proprietary | Razorworks | Game source was released somewhen 2003 by Razorworks.[537] |
| Even the Ocean | 2016 | 2023 | action-adventure | Proprietary | Proprietary | Analgesic Productions | The entire source code for the game was uploaded under proprietary terms on GitHub on September 23, 2023.[538] |
| Faery Tale Adventure II: Halls of the Dead | 1997 | 2021 | Point and click adventure | Proprietary | Proprietary | The Dreamers Guild | The Wyrmkeep Entertainment provided the original source code to the ScummVM team in May 2021.[539] |
| Far Cry (video game) | 2004 | ? | FPS | Proprietary | Proprietary | Crytek | Game code was officially released with the SDK.[citation needed] |
| F.E.A.R. | 2005 | ? | FPS | Proprietary | Proprietary | Monolith Productions | Headers and some code distributed with the official SDK.[citation needed] |
| The Feeble Files | 1997 | 2005 | Adventure | Proprietary | Proprietary | Adventure Soft | The source code of the games was made available to ScummVM in 2005.[540] |
| Fight for Life | 1996 | 2008 | Fighting | Proprietary | Proprietary | Atari Corporation | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Flight of the Amazon Queen | 1995 | 2003 | Adventure | Proprietary | Proprietary | Interactive Binary Illusions | The source code of the games was made available to ScummVM in 2004.[540] |
| Freedom Force | 2002 | 2002 (partly) | FPS | Proprietary | Proprietary | Irrational Games | Game logic written in Python. Scripts are located in the game directory.[citation needed] |
| FreeSpace 2 (now FreeSpace 2 Source Code Project) | 1999 | 2002 | Space Sim | Non-commercial/Proprietary | Proprietary | Volition | Game source released by Volition on April 25, 2002.[541] |
| Galaforce | 1986 | 2019 | Shoot 'em up | Proprietary | Proprietary | Superior Software | In March 2019 the source code of Galaforce in BBC Micro 6502 assembly language was released by Kevin Edwards, designer of the game.[542] In April of the same year Edwards released the source code for the Acorn Electron version.[543] |
| Gothic 3 | 2006 | 2007 | RPG | Proprietary | Proprietary | JoWood | Source code was opened by JoWood for the members of "Community patch project" from the game community in 2007.[544] |
| Grand Monster Slam | 1989 | 2017 | Fantasy sports game | ? | Proprietary | Rolf Lakaemper, Hartwig Niedergassel | In March 2017 the source code of the game became available via the Internet Archive.[545] |
| Hack 'n' Slash | 2014 | 2014 | Zelda-like puzzle game | ? | Proprietary | Double Fine | With the 1.0 release on September 9, 2014, the source code of the game was also released by Double Fine.[546][547] |
| Hacker Evolution: Source code | 2007 | 2015 | Hacker game | ? | Proprietary | Exosyphen | Released on May 11, 2015 for $49.95 by the indie game developer.[548] |
| Heartlight | 1990 | 2005 | Action-adventure | ? | ? | X LanD Computer Games / Janusz Pelc | The 8-bit Atari source code became available around 2005.[549] Other games like Robbo became available too. |
| Heavy Metal: F.A.K.K. 2 | 2000 | 2001 | Action-adventure | Proprietary | Proprietary | Ritual Entertainment | Game code distributed with the official editing tools / SDK.[citation needed] |
| Heretic II | 1998 | 1998 | Action-adventure | Proprietary | Proprietary | Raven Software | Game code distributed with the official editing tools.[citation needed] |
| Highlander: The Last of the MacLeods | 1995 | 2008 | Action-adventure | Proprietary | Proprietary | Lore Design Limited | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Homeworld | 1999 | 2003 | Space Real-time strategy | Non-commercial license[550] | Proprietary | Relic Entertainment | Game source released 2003.[551] The source code became the base of several source ports to alternative platforms, like Mac,[552] Linux, Pandora,[553] Maemo/N900,[554] or Android[555][556] using the Simple DirectMedia Layer (SDL) cross-platform multimedia library. As the source code's license requirements limits further development significantly[557] the game's community aims for a re-licensing with the new IP holder Gearbox.[558] In September 2013 Gearbox responded positively to the idea for a re-licensing of the already published source code, noting their efforts in supporting the modding community.[559] |
| Hover Strike | 1995 | 2017 | Shooter | Proprietary | Proprietary | Atari Corporation | Made freely available on a Jaguar-dedicated Facebook group in May 2017.[560] |
| Hover Strike: Unconquered Lands | 1995 | 2008 | Shooter | Proprietary | Proprietary | Atari Corporation | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Hundreds | 2010 | 2010 | Puzzle game | ? | ? | Greg Wohlwend / Semi Secret | Greg Wohlwend chose to open source his code in 2010,[561] partly with the intent to spur "non-coders" to try coding, as he had.[562][563] Programmer Eric Johnson of Semi Secret found the open source version and ported the game to iPad in a weekend before notifying Wohlwend,[562] which was later released commercially in an updated version. |
| I-War (Atari Jaguar game) | 1995 | 2008 | Shooter | Proprietary | Proprietary | Imagitec Design | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Inherit the Earth | 1994 | 2005 | Point and click adventure | Proprietary | Proprietary | The Dreamers Guild | In 2005, Wyrmkeep Entertainment gave the source code for the game to the ScummVM Team for its inclusion in ScummVM.[564][565] |
| Jim Power in Mutant Planet | 1992 | 2017 | Platform game | ? | ? | Digital Concept | Around 2017 the source code of Jim Power was rescued by Piko Interactive.[566] |
| Ken's Labyrinth | 1993 | 2001 | FPS | Non-commercial license | Freeware | Ken Silverman | Ken's Labyrinth was released as freeware on November 16, 1999. The source code under a non-commercial license followed on July 1, 2001.[567] A port to modern operating systems such as Windows and Linux using Simple DirectMedia Layer called LAB3D/SDL was created by Jan Lönnberg and released in 2002.[568] A version of the port which includes new higher resolution textures was also created by Jared Stafford.[569] |
| Kingpin: Life of Crime | 1999 | ? | FPS | Proprietary | Proprietary | Xatrix Entertainment | Game code distributed with the official SDK.[citation needed] |
| The Labyrinth of Time | 1993 | 2016 | Adventure | Proprietary | Proprietary | Terra Nova Development | The source code of the games was made available to ScummVM in 2016.[570][565] |
| Larva Mortus | 2008 | 2009 | Top-down shooter | MIT/Non-commercial (engine/game code[571]) | Proprietary | Rake in Grass | Czech independent video game developer Pavel Tovarys released the Torque 2D v1.1.3 based source code in 2009 under non-commercial conditions.[572][573] Several other games' source code were released too.[574] The code was taken offline after several games' IP were sold to another company. The source code is currently in no known repository on the web available. |
| The Little Mermaid II: Pinball Frenzy | 2000 | 2020 | Pinball | Proprietary | Proprietary | Left Field Productions | On May 11, 2020, Dave Ashley released the source code of the game on GitHub, along with a Game Boy Color emulator.[575] |
| The Lost Files of Sherlock Holmes: The Case of the Serrated Scalpel and The Case of the Rose Tattoo | 1992 | 2015 | Adventure | Proprietary | Proprietary | Mythos Software | On 2015 Electronic Arts gave source code for both games to the ScummVM Team for their inclusion in ScummVM.[576] |
| MechCommander 2 | 2001 | 2006 | Real-time tactics | Shared Source Limited Permissive License[577] | Proprietary | FASA Interactive/Microsoft | Source opened under a Shared Source license by Microsoft in August 2006.[578][579] As of 2017 there is a project fork on GitHub with the goal to port the source code to Linux.[580] |
| Miner Wars 2081 | 2012 | 2013 | 6DOF Space Shooter game | own proprietary license[581] | Proprietary | Keen Software House | 6DOF action-survival space-shooter simulation-game set in the year 2081. Full game and engine source code released under a restrictive license. |
| MiG Alley | 1999 | 2001 | Flight simulation | Proprietary | Proprietary | Rowan Software/Empire Interactive | Source opened by Rowan Software/Empire Interactive in 2001.[582][583] |
| Escape from Monster Manor | 1993 | 2022 | FPS | Proprietary | Proprietary | Studio 3DO | On August 8, 2022, Leo Schwab (programmer of the game) uploaded the entire source code for the game on GitHub.[584] |
| Mr. Do! (for Game Boy) | 1992 | 2007 | Arcade | Proprietary | Proprietary | Universal Entertainment Corporation | Game Boy version open sourced by developer Wesley Knackers in 2007 on his website.[585][586] |
| Myth (series) | 1998 | 2001 | Real-time tactics | Proprietary | Proprietary | Take 2 Interactive/MumboJumbo | Source opened by Take 2 Interactive/MumboJumbo to the game community in 2001.[587][588] |
| Nanosaur | 1998 | 2003 | FPS | Proprietary | Proprietary | Pangea Software | Around 2003 the Nanosaur source code was made available by the developer under a restrictive license.[589] |
| Nemesis the Warlock | 1987 | 2019 | Action game | Proprietary | Proprietary | Creative Reality | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 version of the game to GitHub.[454] |
| Nightlong: Union City Conspiracy | 1998 | 2021 | Adventure | Proprietary | Proprietary | Trecision | On May 29, 2021, the ScummVM Team received the source code for the in-house game engine created by Trecision, and used for games like Nightlong: Union City Conspiracy, Ark of Time, and Alien Virus.[590] |
| Pariah | 2005 | 2005 (partly) | FPS | Proprietary | Proprietary | Digital Extremes | Game code available on GitHub.[591] |
| Pirate Adventure | 1978 | 1980 | adventure game | ? | ? | Scott Adams (game designer) | The source code for Pirate Adventure was printed in the December 1980 issue of BYTE, with an addendum in April 1981.[592][593] This enabled others to discover how the engine worked and to create their own adventures using this or a similar design. |
| Postal 2 | 2003 | 2003 (partly?) | FPS | Proprietary | Proprietary | Running with Scissors | Some game code and tools distributed with the official game release.[citation needed] |
| Preppie! | 1982 | 2016 | action game | ? | ? | Russ Wetmore / Star Systems Software | In January 2016 Russ Wetmore released the source code of his Atari 8-bit family games Preppie! and Preppie II to the public on the Internet Archive.[438] |
| Prince of Persia | 1989 | 2012 | Cinematic platformer | Proprietary | Proprietary | Jordan Mechner | Apple II source code was long-thought-lost,[594] but was found again and released in 2012.[595] A port of the assembly source code to C and SDL as backend was made by a community programmer.[596] |
| Rampage | 1988 | 2019 | Action game | Proprietary | Proprietary | Software Studios, Catalyst Coders | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub.[454] |
| Rowan's Battle of Britain | 2000 | 2001 | Flight simulation | Empire Interactive License | Proprietary | Rowan Software/Empire Interactive | Source opened by Rowan Software/Empire Interactive in 2001.[582][597] |
| Rune | 1999 | 2000 | FPS | Proprietary | Proprietary | Human Head Studios | Headers and some code distributed with the official SDK.[citation needed] |
| Savant - Ascent | 2013 | 2015 | Action | Proprietary | Proprietary | D-Pad Studio | Source code released in the Humble Weekly Bundle: Play and Create with GameMaker on September 17, 2015.[598][599] |
| Sea Dogs: An Epic Adventure at Sea | 2000 | 2009 | pirate game | Proprietary | Proprietary | Akella | In 2009 Akella agreed to hand the source code of Sea Dogs' game engine to the game community on end-of-support.[600] |
| Severance: Blade of Darkness | 2001 | 2001 (partly) | FPS | Proprietary | Proprietary | Rebel Act Studios | Game logic written in Python. Scripts are located in the game directory.[citation needed] |
| Shadowgun: Deadzone | 2011 | 2015 | Shoot 'em up | SHADOWGUN: DEADZONE PUBLIC LICENSE AGREEMENT[601] | Proprietary | Madfinger Games | Game source and assets of the Unity 3.5 game were released some years after release.[602] |
| Shadowgrounds | 2005 | 2011 | Shoot 'em up | own non-commercial license[603] | Proprietary | Frozenbyte | Game source released with a Humble Indie Bundle by Frozenbyte on April 22, 2011.[604] |
| Shadow Warrior | 1997 | 2005 | FPS | Build license/GPLv2+ (engine[525]/game code) | Proprietary | 3D Realms | Game source released on April 1, 2005.[605] |
| Silent Hunter II | 2001 | 2002 | submarine simulation | ? | Proprietary | Ubisoft | Around 2002 Ubisoft had ended the official support while still significant issues existed. Therefore, Ubisoft enabled the game's community at Subsim.com to fix the game themselves by giving them the source code.[606] The fans raised $7000 for an unofficial patch development project which fixed most of the issues.[606] The community extended Silent Hunter II also content wise significantly with expansion packs or texture upgrades.[607][608] |
| Sin & SiN: Wages of Sin | 1998 | 1998 | FPS | Proprietary | Proprietary | Ritual Entertainment | Game code was officially released.[citation needed] |
| Sláine | 1987 | 2019 | Adventure | Proprietary | Proprietary | Creative Reality | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 version of the game to GitHub.[454] |
| Soliter | 1994 | 2009[609] | Puzzle game | Proprietary | Freeware | Oldsoft | Zdnek Stary developed at the Czech development studio Oldsoft the solitair game Soliter for the ZX Spectrum which got released in 1994. The game was released by the author in 2005 on his homepage for download, in 2009 the assembly source code followed as scan.[609] |
| Soldier of Fortune | 2000 | ? | FPS | Proprietary | Proprietary | Raven Software | Game code distributed with the official SDK.[citation needed] |
| Soldier of Fortune II: Double Helix | 2002 | ? | FPS | Proprietary | Proprietary | Raven Software | Game code distributed with the official SDK.[citation needed] |
| Solstice | 2016 | 2016 | Visual novel | Proprietary | Proprietary | MoaCube | Source code released in the Humble GameMaker Bundle on September 6, 2016.[497][498][499] |
| Space Engineers | 2013 | 2015 | space sandbox game | Proprietary | Proprietary | Keen Software House | On May 14, 2015, the development studio made the source code freely available to the game's community for easier modding on GitHub under a proprietary license (non-open source license).[610][611][612] |
| Star Fire | 1980 | 2020 | Arcade | Proprietary | Proprietary | Exidy | On August 21, 2020, The History of How We Play uploaded to the Internet Archive the source code for Star Fire provided by David Rolfe, co-designer of the game.[613] |
| Star Raiders | 1979 | 2015 | space combat simulator | Proprietary | Proprietary | Aric Wilmunder / Atari | The commented assembly source code scan of Star Raider became available in October 2015 in the Internet Archive as scan.[614] Aric Wilmunder opened it up with several other artifacts of his gaming career (e.g. SCUMM).[615] The community typed in the source code double checked in a GitHub project.[616] Shortly before a reverse engineering project was finished, too.[617] A true sequel, also called Star Raiders II, had been under development for some time by Aric Wilmunder. The never released prototype source code was posted publicly in December 2015.[618] |
| Star Trek: Voyager – Elite Force | 2000 | 2000 | FPS | Proprietary | Proprietary | Raven Software | Game code distributed with the official GDK.[citation needed] Holomatch multiplayer independently ported to ioquake3. |
| Star Trek: Elite Force II | 2002 | 2003 | FPS | Proprietary | Proprietary | Ritual Entertainment | In November 2003 Ritual Entertainment released the source code of their server-side code base for multiplayer gaming under a non-commercial license.[619][620] |
| Stealth Bastard Deluxe | 2012 | 2015 | Stealth | Proprietary | Proprietary | Curve Digital | Source code released in the Humble Weekly Bundle: Play and Create with GameMaker on September 17, 2015.[598][599] |
| Taxman | 1981 | 202? | pacman clone | ? | ? | H.A.L. Labs / Brian Fitzgerald | Apple II pacman clone from 1981. In August 2015 Rebecca Heineman announced that original developer Brian Fitzgerald allowed to release the source code.[621][622] GitHub repository is still empty as of July 2020.[623] |
| Tempest 2000 (Atari Jaguar) | 1994 | 2008 | Tube shooter | ? | Proprietary | Llamasoft | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Terminal Velocity | 1995 | 2015 | flight game | ? | ? | Mark Randel / Terminal Reality | Became available under a NDA in June 2015.[624] Work on an updated version for modern system started immediately.[625] |
| The Clue! | 1994 | 2000 | role-playing adventure game | own license | own license / Freeware | Neo Software | In 2000 the source code was released to the public.[626][627] The game is since then ported to modern platforms via SDL and receives still updates by the community (2015).[628] |
| The Guild of Thieves | 1987 | 2017 | adventure game | ? | ? | Magnetic Scrolls | In June 2017 Magnetic Scrolls worked on recovering the source code of their classics from tapes to remaster and re-release them.[629][630] |
| The Wizard's Castle | 1980 | 2004 | role-playing adventure game | ? | ? | Joseph R. Power | The BASIC source code of the 1980 developed game was published by the developer in the July/August 1980 issue of Recreational Computing.[631] Ports to other systems followed afterwards.[632] |
| The Wheel of Time | 1999 | 1999 | FPS | Proprietary | Proprietary | Legend Entertainment | Game code and tools distributed with the official game release.[citation needed] |
| Tilt Brush | 2016 | 2021 | Room scale | Proprietary/Apache-2.0 (engine[509]/game code) | Proprietary | The Unity 2018.4.11f1 source code was uploaded to GitHub on January 26, 2021.[633] | |
| Tony Tough and the Night of Roasted Moths | 2002 | 2012 | Point and click adventure | Proprietary | Proprietary | Nayma Software | In 2012, DotEmu and Nayma Software gave the source code for this game to the ScummVM Team for its inclusion in ScummVM.[634][565] |
| Tornado | 1993 | 2017 | combat flight simulator | ? | Proprietary | Digital Integration / Interplay Entertainment | In March 2016 in the Tornado's community forum, rumors surfaced that Interplay Entertainment was working on a re-release of the game for digital distribution, based on the original source code.[635] The assembly source code finally surfaced in January 2017 on github.com.[636][637] |
| Trevor McFur in the Crescent Galaxy | 1993 | 2008 | Shoot 'em up | ? | Proprietary | Flare II | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[458][459] Source code was provided by Atari historian Curt Vendel.[460] |
| Tron 2.0 | 2003 | 2009 | FPS | ? | ? | Monolith Productions | Source code released with Lithtech Jupiter Enterprise b69 engine. |
| Ultima: Escape from Mt. Drash | 1983 | 2003 | Role-playing video game | Proprietary | Proprietary | Keith Zabalaoui / Sierra On-Line | On 11 June 2003, the game was ported to PC (under GPLv2 license) by Kasper Fauerby based on the original BASIC source code and some smaller binary reverse engineered parts.[638] |
| Unreal | 1998 | 2008 | FPS | source opened to the community under NDA | Proprietary | Epic MegaGames | Headers and some code distributed with the official SDK.[citation needed] Also, some pre-release version (v0.87) is available on the internet.[citation needed] Around 2008 access to source-code was granted by Epic MegaGames to the OldUnreal game community.[639] In 2015 Tim Sweeney announced that he hope to be able to open source one day the engine to the public.[640] |
| Unreal Tournament 99 | 1999 | 2019 | FPS | source opened to the community under NDA | Proprietary | Epic Games, Digital Extremes, Legend Entertainment | Headers and some code distributed with the official SDK.[citation needed] Around 2019 access to source-code was granted by Epic MegaGames to the OldUnreal game community.[641] |
| Unreal Tournament 2003 | 2002 | ? | FPS | Proprietary | Proprietary | Epic Games | Game code was officially released.[citation needed] |
| Unreal Tournament 2004 | 2004 | ? | FPS | Proprietary | Proprietary | Epic Games | Game code was officially released.[citation needed] |
| Unreal Tournament 3 | 2007 | ? | FPS | Proprietary | Proprietary | Epic Games | Game code was officially released.[citation needed] |
| Uplink | 2001 | 2003 | Hacking simulation | Proprietary | Proprietary | Introversion Software | Mid-2003 Introversion Software started selling the source code for $45. Usage beside modding and fixing of the game are not permitted by the license.[642] Source code of the games Darwinia + Multiwinia and DEFCON was later sold too.[643] |
| Unreal II: The Awakening | 2003 | ? | FPS | Proprietary | Proprietary | Legend Entertainment | Game code and tools distributed with the official game release.[citation needed] |
| Video Checkers | 1980 | 2020 | Board | Proprietary | Proprietary | Atari, Inc. | On April 8, 2020, Kay Savetz uploaded scans of the complete source code of the revision A of Video Checkers (a first-party video game for the Atari 2600) to the Internet Archive donated by its developer Carol Shaw.[644] |
| VVVVVV | 2010 | 2020 | platformer | source available | Proprietary | Terry Cavanagh | On the 10th anniversary of the game's release in January 2020, Kavanagh released the source code[645] for VVVVVV under a non-open source "VVVVVV Source Code License v1.0"[646] via GitHub.[647] |
| Warlords Battlecry III | 2004 | 2006 | RTS | Own proprietary license | Proprietary | Infinite Interactive/Enlight Software | On 24 May 2006, the Warlords Battlecry III source code became available to the public. Members of the community (who signed a NDA) have been entitled distributors, which have the legal permissions to allocate copies of the Warlords Battlecry III source code.[648][649] The source code release resulted in the development of several community-made fan patches[650][651] and mods. |
| War Worlds | 2013 | 2014 | RTS | Own permissive license[652] | Own permissive license | Codeka / Dean Harding | The mobile strategy game was originally released commercially,[653] and later released to the public to allow the community to continue the support of the game.[654][655] With help of the community the game's main developer has continued the support since then. |
| Witchaven series | 1995 | 2006 | FPS | non-given | Proprietary | Capstone Software | Around 2006 Les Bird, a programmer from the 1996 folded game development company Capstone Software, released the source code of the games Witchaven, Witchaven II, William Shatner's TekWar and Corridor 7: Alien Invasion.[656] |
| Worms Armageddon | 1999 | 2002 | Deathmatch game | ? | Commercial | Team17 | Around 2002 Team17, impressed by the reverse engineering on Worms Armageddon for "Silkworm",[657] gave David "Deadcode" Ellsworth access to the source code.[658] Over the next years he created unofficial patches, until he joined Team17 in 2006. Updates are still created as of 2015.[659] |
| Xenonauts | 2014 | 2015 | Turn-based tactics | ? | Proprietary | Goldhawk Interactive | Shortly after the release of the stable version Goldhawk Interactive allowed selected members of the community to access the source code.[660] This resulted in the community edition of the game (Xenonauts:Community Edition, X:CE), which continues development of an independent branch of the game, adding new features and bugfixes.[661] |
| XIII | 2003 | 2018 (partly) | FPS | Proprietary | Proprietary | Ubisoft Paris | The UnrealScript source code of the game was made available on GitHub in January 2018.[662] |
See also edit
- Category:Commercial video games with freely available source code.
- List of open-source game engines
- List of commercial video games with available source code
- List of open-source video games
- List of formerly proprietary software
- List of commercial video games released as freeware
- List of freeware games
- List of proprietary source-available software
- Source port
- Source-available software
References edit
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- ^ Dunne, Alex (June 1999). "A Business Case for Publishing Source Code" (PDF). Game Developer. Miller Freeman, Inc. p. 4. Retrieved 2022-06-28.
- ^ Cavanagh, Terry (10 January 2021). "Featured VVVVVV Levels: 10th anniversary jam roundup". distractionware. from the original on 20 February 2022. Retrieved 17 July 2022.
- ^ Rosen, David (23 December 2010). "Revenge of the Titan's will release its source code at 1.75M!". Wolfire Games. from the original on 21 June 2022. Retrieved 17 July 2022.
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- ^ . Archived from the original on 2003-06-10. Retrieved 2007-09-07.
- ^ Abuse 1996 - 20th anniversary source port 2016-07-21 at the Wayback Machine on gog.com "Abuse SDL 0.9a:- Enabled custom resolutions and enabled lights on high resolutions - Re-enabled OpenGL rendering to enable vsync [...]- Added cheats via chat console: bullettime, god, giveall, flypower, sneakypower, fastpower, healthpower, nopower - XBox360 controller support with rebindable buttons"
- ^ Abuse_1996 2016-06-13 at the Wayback Machine on github.com/antrad
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- ^ AlienBash_src.readme 2016-03-04 at the Wayback Machine This code is available under the following license, as stated by Mr. Glen Cumming in the above thread: "I am happy for every scrap of code on my disks to be made available to whoever wants it - I only ask that the really embarrassing stuff is erased (lots) and any potentially libelous messages (or swears) in any of the code/scrolling messages are removed."
- ^ AlienBash I & II - Original Coder Contacted - Help Needed in Rescuing 68000 Source!! 2016-03-06 at the Wayback Machine on eab.abime.net (2014)
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- ^ Kurinnoy, Michael (2007-02-20). (PDF). Viewizard. Archived from the original (PDF) on 2011-07-17. Retrieved 2010-03-08.
- ^ on viewizard.com (2007-10-12)
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- ^ Frigaard, Andy (20 June 2021). ""Bird Strike Q&A Thread" post #4". stardot.org.uk. from the original on 21 June 2021. Retrieved 21 June 2021.
After a few enjoyable weeks of working through all the original uncommented code, I have posted the source to Github.
- ^ Blades of Exile Source Code 2014-09-05 at the Wayback Machine on spiderwebsoftware.com
- ^ Source Code. "The complete source code of the following Clonk versions is available: Clonk Rage (current version) (engine, tools, and editor, VC6/VC7/VC9/MinGW/gcc/xcode) Clonk Endeavour 4.95.5 (engine only, VC6 or MinGW) Clonk Planet 4.65 (engine only, VC6) Clonk 3 Radikal (MS-DOS, Borland Turbo C++) Clonk 2 Debakel (MS-DOS, Borland Turbo C++) Clonk 1 (MS-DOS, Borland Turbo C++ [...] Clonk Source Code License (ISC License) Copyright (c) 2001-2014, RedWolf Design GmbH 2006-01-14 at the Wayback Machine"
- ^ Developer "Clonk Game Content License Clonk game content is available under the following license. This applies to graphics, audio data, scripting, and text found in the game release packages (usually packed inside c4f, c4g, and c4d group files). Creative Commons Attribution-NonCommercial (CC BY-NC)"
- ^ (in Polish) Announcement on Polish fan community page 2012-08-07 at the Wayback Machine
- ^ a b Jerz, Dennis (2007). "Somewhere Nearby is Colossal Cave: Examining Will Crowther's Original "Adventure" in Code and in Kentucky". Digital Humanities Quarterly. 001 (2). Seton Hill University. from the original on 2016-06-16.
- ^ David Kinder's guide to Adventure downloads 2014-08-12 at the Wayback Machine at the Interactive Fiction Archive
- ^ Colossal Cave Adventure Source Code 2015-06-06 at the Wayback Machine on jerz.setonhill.edu (2007)
- ^ adv350-pdp10.tar.gz 2016-06-23 at the Wayback Machine on ifarchive.org (2000)
- ^ 'Colossal Cave Adventure' is due for an update. 2017-05-29 at the Wayback Machine by Jordan Pearson on vice.com (May 29, 2017)
- ^ open-adventure 2017-05-30 at the Wayback Machine on GitLab
- ^ The Adventure begins again 2017-05-31 at the Wayback Machine by Eric Raymond (2017-05-22)
- ^ on hardgeus.com (archived)
- ^ Cylindrix 2016-07-21 at the Wayback Machine on github.com
- ^ "Citadel for Amiga (1995) MobyRank". MobyGames. from the original on 2020-03-04. Retrieved 2020-03-04.
- ^ the citadel source code 2016-07-21 at the Wayback Machine (October 2007)
- ^ Cytadela - need help in porting to AmigaOS 2016-07-21 at the Wayback Machine on amigaworld.net (31-Jan-2007)
- ^ Cytadela project - a conversion of an Amiga first person shooter 2016-06-23 at the Wayback Machine on cytadela.sourceforge.net
- ^ Savetz, Kevin [@KevinSavetz] (March 9, 2018). "I recovered the source code [of Dandy] from floppy disk and posted it with the creator's permission" (Tweet). Archived from the original on 29 February 2020. Retrieved 29 February 2020 – via Twitter.
- ^ The original Atari 8-bit version being added to GitHub
- ^ Dragonfire source 2013-03-16 at the Wayback Machine on atariage.com
- ^ Dragonfire Source Code 2016-03-07 at the Wayback Machine at atariage.com "Really, it was Bob that wanted his source in the public domain." (2003)
- ^ [stella] Source code for Dragonfire from Bob Smith 2016-07-21 at the Wayback Machine on biglist.com
- ^ minidig 2016-11-12 at the Wayback Machine on qotile.net
- ^ Bolding, Jonathan (January 25, 2020). "Duelyst to shut down servers forever". PC Gamer. Retrieved January 25, 2020.
- ^ Chalk, Andy (10 January 2023). "Duelyst source code is now free for everyone, 'no strings attached'". PC Gamer. Future plc. from the original on 2023-01-10. Retrieved 10 January 2023.
- ^ on hurricane-studios.ath.cx (archived)
- ^ Eat The Whistle 2021-03-30 at the Wayback Machine on sourceforge.net
- ^ Eat the Whistle 2013-09-02 at the Wayback Machine on ggsoft.org
- ^ on hurricane-studios.ath.cx (archived)
- ^ Escape Towards The Unknown 2020-07-21 at the Wayback Machine
- ^ Escape Towards The Unknown GPL 2015-09-10 at the Wayback Machine on sourceforge.net
- ^ Fish Fillets Next Generation
- ^ (archived)
- ^ openglad 2016-03-19 at the Wayback Machine on sourceforge.net
- ^ tinyspeck (2013-11-18). . glitchthegame.com. Archived from the original on 2013-12-13. Retrieved 2013-12-11.
The entire library of art assets from the game, has been made freely available, dedicated to the public domain. Code from the game client is included to help developers work with the assets. All of it can be downloaded and used by anyone, for any purpose.
- ^ Blackwell, Laura (2013-11-18). "Afterlife of an MMO: Glitch's offbeat art enters public domain". pcworld.com. from the original on 2013-12-09. Retrieved 2013-12-11.
- ^ Kloodge (27 March 2020). "Source Code Released". Steam Community. Valve. from the original on 30 March 2020. Retrieved 30 March 2020.
- ^ Andersson, Jens; Kronqvist, Jan (2008-09-21). "The Gravity-Force 2 Homepage". lysator.liu.se. from the original on 2013-10-15. Retrieved 2013-10-13.
Jan made an archaeological expedition and recovered the GF2 source code from a dusty old floppy disc! We do not pretend it is a wonder in coding style (in fact, it is a complete disaster!), but for primarily nostalgic interest we publish it here.
- ^ gf2 2013-10-15 at the Wayback Machine on lysator.liu.se "The screenshots, the GF2 source code, and the actual Amiga game (v1.10, v1.20) are released for use under the CreativeCommons CC-BY-SA license." (April 26, 2017)
- ^ "Bringing Habitat Back to Life". pastemagazine.com. 3 February 2016. from the original on 2016-03-02. Retrieved 2016-02-22.
- ^ . The Museum of Art and Digital Entertainment. Archived from the original on 21 July 2016. Retrieved 6 June 2016.
- ^ Francis, Bryant (2016-07-06). "Source code for Lucasfilm Games' '80s MMO Habitat released". Gamasutra. from the original on 2016-07-08. Retrieved 2016-07-06.
- ^ Lucasfilm Games' MMO 'Habitat' source code released 2016-07-21 at the Wayback Machine by Brittany Vincent on Engadget.com (2016-07-07)
- ^ Halloween: The New Nightmare - IGN
- ^ Halloween: The New Nightmare - Jadeware
- ^ Halloween: The New Nightmare - GitHub
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- ^ gameSource 2016-07-21 at the Wayback Machine on sourceforge.net
- ^ Inside a Star-Filled Sky (Public Domain For-Pay) + Video Review + Jason Rohrer on open source 2015-09-05 at the Wayback Machine on freegamer.blogspot.de (March 2011)
- ^ on strotmann.de (2003)
- ^ Kaiser II unter GNU Public License on abbuc.de (03 April 2003)
- ^ David H. Ahl (April 1982). "Six Business Management Games" (jpg). Creative Computing. Vol. 8, no. 4. pp. 28, 30. from the original on 2016-09-16.
- ^ lemonade-source.zip 2016-03-07 at the Wayback Machine on strout.net
- ^ Lemonade Stand 2006-04-01 at the Wayback Machine on Codenautics "Lemonade Stand is both free and open-source"
- ^ Lugaru goes open source 2011-02-02 at the Wayback Machine Wolfire Blog, May 11, 2010
- ^ Relicensing all Wolfire Lugaru assets to CC-BY-SA 3.0 on GitLab by David Rosen (November 21, 2016)
- ^ osslugaru.gitlab.io 2016-12-31 at the Wayback Machine
- ^ Fully Open Source 3D Killer Rabbit | Lugaru HD 1.1 on freegamer.de (January 2017)
- ^ "Maelstrom: Changeset 8:0e3d2ddd9add". from the original on 2011-07-16. Retrieved 2010-05-18.
- ^ megaball 2016-06-16 at the Wayback Machine on snappymaria.com (June 12, 2012)
- ^ megaball 2016-07-21 at the Wayback Machine on Bitbucket.org
- ^ No Gravity (Classic) 2013-03-24 at the Wayback Machine on sourceforge.net
- ^ (archived)
- ^ Nothing to hide license on github.com
- ^ Nothing To Hide Is A Very Smart Anti-Stealth Game 2017-06-07 at the Wayback Machine by John Walker on Rock, Paper, Shotgun (on February 12, 2014)
- ^ Demo + Crowdfunding: anti-stealth game Nothing To Hide takes its name literally 2016-10-08 at the Wayback Machine by Anthony Swinnich on indiegames.com (February 16, 2014)
- ^ Attention game designers: Public Domain Jam! [permanent dead link] on creativecommons.org by Matt Lee (May 16, 2014)
- ^ (archived)
- ^ paybacktime2 on github.com
- ^ Budge, Bill [@BillB] (February 12, 2013). "I just pushed the source for Pinball Construction Set to GitHub (thanks to Scott Cronce at EA)" (Tweet). from the original on 11 August 2018. Retrieved 16 June 2016 – via Twitter.
- ^ Budge, Bill. "billbudge/PCS_Atari800". GitHub. from the original on July 25, 2013. Retrieved February 13, 2013.
- ^ Budge, Bill. "PCS_AppleII". GitHub. Retrieved February 13, 2013.
- ^ "Blupi-games/Planetblupi". GitHub. 14 May 2021.
- ^ Planet Blupi
- ^ "blupi.org". blupi.org. 2018-06-02.
- ^ Spacewar! assembly source code 2020-02-23 at the Wayback Machine on textfiles.com
- ^ on crosscutgames.com (2004-04-17)
- ^ runesword 2 2015-09-06 at the Wayback Machine on sourceforge.net
- ^ Wiesner, Thorsten (2004-04-19). "Rollenspiel RuneSword 2 ist ab sofort Open Source – Kompletter Source Code steht zum Download bereit" (in German). golem.de. from the original on 2015-09-24. Retrieved 2015-08-04.
- ^ 2.6.3 patch 2017-06-12 at the Wayback Machine on sourceforge.net (2011)
- ^ (archived)
- ^ . Virtualcitizenship.org. Archived from the original on 2007-10-29. Retrieved 2009-10-14.
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- ^ 7kfans.com/?p=96 2012-07-23 at the Wayback Machine
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- ^ Simser, Bil (2008-01-10). "SimCity Source Code Released to the Wild! Let the ports begin..." weblogs.asp.net/bsimser. from the original on 2014-05-10. Retrieved 2012-12-30.
[...]Don Hopkins got a lot of work done on the finishing touches on releasing the original SimCity source code under the GNU General Public Library (GPL). The code won't have reference to any SimCity name as that has all be renamed to Micropolis. Micropolis was the original working title of the game and since EA requires that the GPL open source version not use the same name as SimCity (to protect their trademark) a little work had to be done to the code.
- ^ sissyfight-2000-returns on kickstarter.com
- ^ post on kickstarter.com
- ^ sissyfight on github.com
- ^ "Soldat 1.8 has been released as open source!". Steam. Valve Corporation. 25 May 2020. Retrieved 26 June 2020.
- ^ Marcinkowski, Michael (26 May 2020). "Soldat source code released and a story of how it all started". Gamasutra. UBM Technology Group. from the original on 15 June 2020. Retrieved 26 June 2020.
- ^ Soldat asset license on github.com
- ^ Clark, Dave (2000-10-29). "Sopwith Code Support". Archived from the original on July 18, 2012. Retrieved 2006-12-01.
- ^ Clark, Dave. "Sopwith – Source Code". Dave Clark's Home Page. Archived from the original on 2012-02-06. Retrieved 2006-12-01.
- ^ Duane Blehm's Source Code on macintoshgarden.org "Source Code for Duane Blehm's games (Stunt Copter, ZeroGravity, Cairo Shootout), released into the public domain by his parents after his passing."
- ^ Brouwer, Shane (27 July 2012). . Archived from the original on 21 July 2016. Retrieved 10 July 2016.
- ^ Brouwer, Shane [@initials_games] (February 2, 2021). "Do you remember Super Lemonade Factory. It's free now on itch.io. I've also added back the cute run cycle gifs to the page. It's been 10 years of bubbly fun, it's time to open source the art and code" (Tweet). from the original on 1 October 2021. Retrieved 1 October 2021 – via Twitter.
- ^ Brouwer, Shane [@initials_games] (February 4, 2021). "So do you remember the OUYA preservation effort? I've just dumped the source code for Super Lemonade Factory for OUYA and you're welcome to do whatever you want with it" (Tweet). from the original on 1 October 2021. Retrieved 1 October 2021 – via Twitter.
- ^ Triplane Classic 2015-12-24 at the Wayback Machine on sourceforge.net
- ^ Triplane Classic - a side-scrolling dogfighting game 2016-07-21 at the Wayback Machine on github.com
- ^ Free game graphics: Tyrian ships and tiles 2012-12-28 at the Wayback Machine Daniel Cook (2007-04-04)
- ^ Lost garden license 2012-12-28 at the Wayback Machine
- ^ Civil War Strategy Game 2.10 RELEASED! on hutsellgames.com
- ^ The source code for the classic Civil War Strategy Game by W.R. Hutsell. on github.com/davidshq/civilwarstrategygame
- ^ voxel-quest 2016-09-14 at the Wayback Machine on kickstarter.com (2014)
- ^ First Release!!! 2016-09-13 at the Wayback Machine on voxelquest.com (August 03, 2016)
- ^ vqisosmall on github.com
- ^ Wander (1974) — a lost mainframe game is found! 2015-11-17 at the Wayback Machine on April 22, 2015
- ^ Wander (1974) release, and questions answered 2015-11-17 at the Wayback Machine
- ^ WaterRace 2018-06-11 at the Wayback Machine on github.com
- ^ Warfare Incorporated has been open sourced 2016-05-14 at the Wayback Machine on warfareincorporated.com by Scott Lu (2014)
- ^ hostile-takeover 2016-07-21 at the Wayback Machine on github.com
- ^ Warfare Incorporated now Open Source Hostile Takeover 2016-05-09 at the Wayback Machine on pyra-handheld.com (2015)
- ^ Updated GPL release readme 2013-03-08 at the Wayback Machine by Jay Walker (eidos) (11 Jun 2008)
- ^ Savetz, Kay [@KaySavetz] (March 17, 2021). "Thanks to [John Keoni Morris] we have recovered the source code for the Commodore 64 version of "Worms?" (Electronic Arts, 1983.) The creator, David S. Maynard, has released the code with a free software license. I recovered the Atari version last week" (Tweet). from the original on 17 March 2021. Retrieved 21 March 2021 – via Twitter.
- ^ The DUNGEON (Zork I) source 2016-07-21 at the Wayback Machine on github.com/devshane/zork
- ^ dungeon-3.2A.tar.Z (05-Oct-1994) 2016-06-23 at the Wayback Machine on the Interactive Fiction Archive "Dungeon version 3.2A, 1-Oct-94; contains all the rooms and puzzles of the original MIT Zork. DEC FORTRAN source code by Robert M. Supnik; see dungn32b.zip for a port to DOS."
- ^ itafroma/zork-mdl
- ^ zork-source-code-is-a-master-class-in-game-developer-trolling
- ^ Sweeney, Tim. . Epic Games. Archived from the original on October 10, 1999.
Please don't ask for the source; if I had it, I'd release it, but I lost it in a crash a long time ago.
- ^ Siekierka, Adrian [@cbrzeszczot] (January 28, 2023). "According to [Tim Sweeney], the original ZZT source code was lost in the early 90s: "[... If] I had it, I'd release it, but I lost it in a crash a long time ago." But they were all of them deceived, for another backup was made" (Tweet). from the original on 31 January 2023. Retrieved 31 January 2023 – via Twitter.
- ^ allegiancelicense.txt 2014-11-07 at the Wayback Machine Microsoft Research Shared Source license agreement ("MSR-SSLA")
- ^ Colayco, Bob (2004-02-06). . gamespot.com. Archived from the original on 2013-12-10. Retrieved 2011-07-22.
- ^ Horvitz, Eric (2017-07-28). "Allegiance Relicense Letter" (PDF). Director, Microsoft Research. Retrieved 2017-07-28.
- ^ AmuletsArmor 2017-05-23 at the Wayback Machine on github.com
- ^ source code 2017-02-11 at the Wayback Machine "Yep, legal issues are now resolved. We're moving forward." (February 2013)
- ^ Questions regarding codebase 2017-02-11 at the Wayback Machine (October 2016)
- ^ AmuletsArmor on github.com/emrecelikten
- ^ Ares 2015-05-18 at the Wayback Machine on amrosiasw.com
- ^ Antares 2013-07-24 at the Wayback Machine on arescentral.org
- ^ Munkki, Juri (2016-10-30). "Avara game, originally released in 1996 for Mac OS". GitHub. from the original on 2016-12-16. Retrieved 2016-10-30.
- ^ sourceforge.net/projects/raceintospace 2013-06-11 at the Wayback Machine
- ^ a b
- ^ Petitte, Omri (20 March 2014). "Cart Life exits Steam, goes open source". PC Gamer. from the original on 22 March 2014. Retrieved 21 March 2014.
- ^ www.richardhofmeier.com on archive.is
- ^ Die geheimen Projekte des Richard Hofmeier 2016-07-21 at the Wayback Machine on indiegames.ch (May 2015)
- ^ cartlife_src 2016-07-21 at the Wayback Machine on github.com
- ^ Corncob 3D and the Corncob Other Worlds Campaign on tidegear.net "Kevin Stokes has given his permission to do whatever we like with this!" (2016-01-03)
- ^ Dink-Smallwood-Source-License 2015-01-06 at the Wayback Machine
- ^ Dink-Smallwood-Source-License 2015-01-06 at the Wayback Machine Please keep in mind while I'm sharing the source, I am not sharing the media, if you would like to use or distribute the Dink Smallwood artwork, this requires express permission.
- ^ "Files | Dink Smallwood Source Code". from the original on 2015-01-06. Retrieved 2015-01-06.
- ^ Find free sounds for FreeDink 2016-07-21 at the Wayback Machine on gnu.org
- ^ Dink Smallwood HD 1.89 released, made free on all platforms on codedojo.com
- ^ DinkSmallwoodHD on github.com
- ^ Brány Skeldalu (aka The Gates of Skeldal) is ready for testing 2015-11-22 at the Wayback Machine on trisquel.info
- ^ skeldal 2016-07-21 at the Wayback Machine on sourceforge.net
- ^ "Brány Skeldalu Download, English Patch (Beta) :: DJ OldGames". oldgames.sk. from the original on 1 February 2014. Retrieved 18 January 2014.
- ^ a b Nutt, Christian (12 February 2016). "Get a window into classic Mac dev with Glider source code". Gamasutra. UBM Technology Group. from the original on 24 September 2016. Retrieved 17 August 2020.
Classic Mac game dev John Calhoun has released the source code for four of his games -- Glider, Glider Pro, Glypha III, and Pararena -- onto GitHub.
- ^ Calhoun, John (2016-01-29). "Sources for the Macintosh game, Glider PRO, written by John Calhoun and published by Casady & Green Inc". GitHub. from the original on 2016-03-21.
- ^ Calhoun, John (2016-01-31). "Added legal section to read me. · softdorothy/glider_pro@49a35bb · GitHub". GitHub. from the original on 2016-07-21. Retrieved 2016-03-16.
- ^ GloomAmiga on GitHub - Source code of Gloom released in May 2017
- ^ LICENSE "the license does not cover any other asset within the repository, which is only present for historical and archiving purposes."
- ^ (2002, webarchive)
- ^ vsgarage_deutsch
- ^ software (2002)
- ^ g2ex on sourceforge.net
- ^ on irrgheist.com (archived)
- ^ "In order to purchase H-Craft Championship please visit our reseller Manifestogames.com" (2007)
- ^ H-Craft Championship 2009-10-03 at the Wayback Machine CDnavigator.ru
- ^ H-Craft Championship 2015-08-30 at the Wayback Machine Freeware release announcement in Reddit
- ^ H-Craft Championship 2014-08-25 at the Wayback Machine Irrgheist News, February 25, 2015
- ^ H-Craft Championship - H-Craft Source Code 2015-03-02 at the Wayback Machine on irrgheist.com
- ^ on Mobrulesgames.com "content CC BY-NC-SA, code BSD" (archived 2013)
- ^ haunts 2017-02-09 at the Wayback Machine on kickstarter.com
- ^ Troubled-Haunts-Kickstarter-Goes-Open-Source 2017-03-05 at the Wayback Machine on the Escapist
- ^ haunts on github.com/MobRulesGames
- ^ haunts on github.com/losinggeneration
- ^ Hypercycles 2017-03-28 at the Wayback Machine on freegamedev.net
- ^ hypercycles on github.com
- ^ Gravier, Jean (2021-03-17), jevarg/hypercycles, retrieved 2021-03-18
- ^ After 15 years, a cancelled Game Boy RPG finds life on PC 2016-10-20 at the Wayback Machine on pcgamer.com by Steven Messner (August 16, 2016)
- ^ infinity 2016-08-29 at the Wayback Machine on github.com/infinity-gbc
- ^ Infinity Released (August 13, 2016) October 24, 2016, at the Wayback Machine on affinix.com "Today we are pleased to announce the release of Infinity for Game Boy Color in unfinished form! We've made a ROM file available, as well as the source code."
- ^ "Cancelled Game Boy Color RPG Infinity Goes Live On Kickstarter Next Week". Nintendo Life. 2021-08-11. Retrieved 2021-08-26.
- ^ "Infinity GBC". Infinity GBC. Retrieved 2021-08-26.
- ^ Latest Patches 2015-08-01 at the Wayback Machine on ironseed.com (March 24, 2013)
- ^ wooga-veroeffentlicht-quellcode-von-html5-spiel-magic-land-island 2017-02-05 at the Wayback Machine on browsergame-magazin.de (in German, 2012)
- ^ Pocket Island 2016-10-26 at the Wayback Machine on github.com
- ^ "Marathon 2 Source Code Released". mactech.com. 2000-01-17. from the original on 2014-08-20. Retrieved 2012-12-25.
Today at 7 pm CST Bungie Software releases the Mac source code for their classic game "Marathon 2: Durandal" to the net.
- ^ Osborne, Eric (23 June 2011). . Bungie. Archived from the original on 26 June 2011. Retrieved 19 October 2020.
- ^ Kirmse, Andrew; Kirmse, Chris (2012-09-15). "License for Meridian 59 v1.0". GitHub. from the original on 2015-10-26. Retrieved 2013-10-08.
This source code is distributed under the terms of the GNU General Public License with the following special exception. As a special exception, the copyright holders of this program give you permission to link this program with the accompanying files wrap.dll and waveplay.dll.
- ^ "free distribution" (archived)
- ^ The-Puzzle-Pits 2016-07-21 at the Wayback Machine on github.com
- ^ Running With Scissors [@RWSbleeter] (August 17, 2015). "We're going to release the POSTAL 1 source code soon, but only if someone promises to port it to the Dreamcast" (Tweet). from the original on 14 April 2018. Retrieved 18 December 2016 – via Twitter.
- ^ Running With Scissors [@RWSbleeter] (June 1, 2016). "POSTAL 1 running on Open Pandora. P1 is being opened sourced in the near future!" (Tweet). from the original on 4 June 2017. Retrieved 18 December 2016 – via Twitter.
- ^ Postal Source Code 2016-08-11 at the Wayback Machine by ptitseb "Things are progressing... Stay tuned." (2016)
- ^ The Original POSTAL Has Been Made Open Source 2016-12-29 at the Wayback Machine on runningwithscissors.com (December 28, 2016)
- ^ license 2016-12-29 at the Wayback Machine at bitbucket.org/gopostal/postal-1-open-source/src
- ^ 2016-07-21 at the Wayback Machine webarchive versions
- ^ Debian bug #546800 - RM: starfighter -- RoM; copyright infringement 2015-10-26 at the Wayback Machine on bugs.debian.org
- ^ Wen, Howard (2005-08-11). "The Ur-Quan Masters". linuxdevcenter.com. O'Reilly Media. from the original on 2016-01-19. Retrieved 2016-01-19.
When the original developers of Star Control 2 contacted the online Star Control fan community, they presented an enticing question: if they released the source to the 3DO version of Star Control 2 under GPL, would anybody be interested in porting it to modern-day computers? Michael Martin, a 26-year-old Ph.D. student at Stanford University, answered the call. After removing proprietary 3DO-specific components from the code, the developers released the source for Star Control 2 to the public.
- ^ 1.0 release
- ^ DeVries, Lucas (July 22, 2018). "Star Ruler 2 is now Open Source!". Official Star Ruler 2 discussion board on Steam. Archived from the original on July 24, 2018. Retrieved July 24, 2018.
- ^ Kerr, Chris (2018-07-24). "Blind Mind Studios releases source code for Star Ruler 2". Gamasutra.
- ^ Rubin, Brian (2012-01-16). "Starshatter: The Gathering Storm Goes Open Source!". spacegamejunkie.com. from the original on 2012-06-15. Retrieved 2013-01-08.
Apparently the excellent and unique military space sim, Starshatter: The Gathering Storm, has gone open source thanks to its original developer releasing the source code. [...]: "14 DEC, 2011 – STARSHATTER:THE GATHERING STORM – Open Source Version 5.0.5. This download Includes the cumulative Starshatter-TGS game up to version 5.0.5 (No CD Required). It is available for download from our "Lagacy Official File" section."
- ^ doctorfrog (2012-02-06). "Because Stars Matter: Starshatter (Sci-Fi Flight Sim) is Free!". drfrog.wordpress.com. from the original on 2012-01-27. Retrieved 2012-01-08.
Starshatter: The Gathering Storm is a moderately complex, moderately realistic, spaceborne military flight sim that takes place in a series of dynamic campaigns.
- ^ source 2016-07-21 at the Wayback Machine on digital-eel.com
- ^ sais 2012-12-26 at the Wayback Machine on infinitespacegames.com "After being sold for several years by Cheapass Games, Strange Adventures in Infinite Space was released as free software and its source code was made available under the GNU General Public License. Go to the Strange Adventures in Infinite Space website to download the game, source code and various other goodies"
- ^ strange-adventures-in-infinite-space-free 2016-06-04 at the Wayback Machine on Rock, Paper, Shotgun (2009-10-07)
- ^ GitHub commit on kuroneko/sais (2020-05-18)
- ^ 47-TEK ships Team 47 GoMan for 10 D3D chips from www.47-tek.com Archived 2011-01-22 at the Portuguese Web Archive on groups.google.com (November 1997)
- ^ (archived April 2009)
- ^ 47-TEK gibt "Team 47: GoMan" Source Code frei 2016-07-21 at the Wayback Machine by Christian Klass on golem.de (May 6, 1998)
- ^ a b Looking for source code for Team 47 GoMAN 2016-07-21 at the Wayback Machine on vogons.org (2012)
- ^ Tread Marks 1.7.0 now free and open-source! 2017-02-11 at the Wayback Machine by Rick on longbowgames.com (January 20, 2017)
- ^ TreadMarks 2017-05-23 at the Wayback Machine on github.com
- ^ Treadmarks on github.com/sago007
- ^ tread marks on pyra-handheld.com by ptitSeb (23 September 2017)
- ^ "tribaltrouble". GitHub. from the original on 2014-12-16.
- ^ tribaltrouble byteam-penguin on github.com
- ^ GarageGames to Release T3D as Open Source 2012-12-25 at the Wayback Machine on GarageGames (Eric Preisz 2012-10-09)
- ^ "It's here! The MIT licensed Torque 3D GitHub repo is ready!". from the original on 2012-09-24.
- ^ Tribes 1 and 2 source code anywhere 2015-09-24 at the Wayback Machine on garagegames.com (2013-01-04)
- ^ Source code of the Captain Blood on GitHub
- ^ Storm Engine source code on GitHub
- ^ Storm Engine source code announcement on store.steampowered.com
- ^ a b Grip, Thomas (23 September 2020). "Amnesia is now open source!". Frictional Games. Archived from the original on 23 September 2020. Retrieved 23 September 2020.
- ^ github.com/FrictionalGames/AmnesiaAMachineForPigs
- ^ github.com/FrictionalGames/AmnesiaTheDarkDescent
- ^ Love, Christine (4 May 2013). "Tumblr post #49592102340". Love Conquers All Games. from the original on 27 May 2020.
You can use the python code portions for whatever you like. I've also left in the script, but only for context; please don't interpret this as me releasing any sort of legal rights whatsoever to the writing in the game! (I apologize for even needing to say this, but… you know, lawyers.)
- ^ Grandstaff, Matt (11 January 2011). . Bethesda Blog. ZeniMax Media. Archived from the original on 7 October 2015. Retrieved 17 April 2020.
- ^
list, commercial, video, games, with, later, released, source, code, open, source, video, games, list, open, source, video, games, commercial, games, which, were, released, freeware, without, source, code, list, commercial, video, games, released, freeware, th. For open source video games see List of open source video games For commercial games which were released as freeware without source code see List of commercial video games released as freeware This is a list of commercial video games with later released available source code The source code of these commercially developed and distributed video games is available to the public or the games communities Contents 1 Background 2 Lists 2 1 Open engine and game data 2 2 Open source games with free of charge data 2 3 Open source games 2 4 Source available games with free of charge data 2 5 Source available games 3 See also 4 References 5 External linksBackground editCommercial video games are typically developed as proprietary closed source software products with the source code treated as a trade secret unlike open source video games 1 When there is no more expected revenue citation needed these games enter the end of life as a product with no support or availability for the game s users and community 2 In several of the cases listed here the game s developers released the source code expressly to prevent their work from becoming lost Such source code is often released under varying free and non free commercial and non commercial software licenses to the games communities or the public artwork and data are often released under a different license than the source code as the copyright situation is different or more complicated The source code may be pushed by the developers to public repositories e g SourceForge or GitHub or given to selected game community members or sold with the game or become available by other means Source code availability in whatever form allows the games communities to study how the game works make modifications and provide technical support themselves when the official support has ended 2 e g with unofficial patches to fix bugs or source ports to make the game compatible with new platforms Some developers that have released their source code have concluded that in general terms such action has not been harmful and even beneficial among them Alec Holowka Aquaria Adam Saltsman Canabalt 3 John Carmack Wolfenstein 3D Doom Quake 4 Brian Hook Quake II 5 and Terry Cavanagh VVVVVV 6 Wolfire Games also noted along with Saltsman that releasing the source code didn t reduce sales 3 7 However releasing the source code may and has led to clones using the original proprietary assets from the game with two notable examples of games having clones thanks to the source release being Canabalt and Lugaru HD Although Saltsman has noted that those clones can be removed from storefronts with a DMCA takedown notice 3 Jeff Rosen co founder of Wolfire Games has recognized that such practices may discourage game developers from releasing their code 8 Lists editOpen engine and game data edit The games in this table were released under a free and open source license with free content which allows reuse modification and commercial redistribution of the whole game Licenses can be public domain GPL BSD Creative Commons zlib MIT Artistic License or other see the comparison of Free and open source software and the Comparison of free and open source software licenses Title First release Source code release Genre Engine license Content license Original developer Additional information Abuse 1995 2003 Run and gun Public domain software Public domain and Proprietary Crack dot Com Game source code was released as public domain along with the shareware released media files 9 Only shareware data excluding the sound effects is in the public domain the rest is proprietary In 2016 a community developer released a 20th anniversary source port 10 11 which enabled custom resolutions OpenGL rendering Xbox 360 controller support and fixed the music Adventureland 1978 1980 Text Adventure game Public domain software Public domain Scott Adams Scott Adams Adventureland s 12 source code was published in SoftSide magazine in 1980 13 and the database format was subsequently used in other interpreters such as Brian Howarth s Mysterious Adventures series 14 Alien Bash I II importance 1993 2014 Run and gun public domain software public domain 15 Glen Cumming Glen Cumming provided media and material of his Amiga games AlienBash and AlienBash II to the fan community who was able to restore source code in 2014 16 third party source needed Ant Eater 1983 2021 Maze MIT MIT Eddy Fries On March 30 2021 Kay Savetz uploaded the source code for Ant Eater a Dig Dug clone Princess and Frog a Frogger clone Sea Chase and two unreleased video games by Ed Fries of Halo 2600 fame to GitHub under the MIT license with permission of Fries 17 AstroMenace now OpenAstroMenace 2006 2007 Arcade GPL 3 0 or later CC BY SA 3 0 Viewizard Based on AstroMenace which was released in February 2007 as shareware for Windows and freeware for Linux 18 Also the source code of another Viewizard game the puzzle collection Memonix was released 19 Beyond the Titanic 1986 2009 Text adventure GPL 2 0 or later GPL 2 0 or later Apogee Software Game source released on March 20 2009 20 Bird Strike 1984 2021 Shoot em up GPL 3 0 GPL 3 0 Andy Frigaard On June 20 2021 the source code for Bird Strike for the BBC Micro one of the first releases by Firebird Software was uploaded to GitHub under the GPLv3 by Andy Frigaard the original developer 21 Blades of Exile 1997 2007 RPG GPL 2 0 only GPL 2 0 only Spiderweb Software Source code and artwork was released by Jeff Vogel Spiderweb Software under a GPL license in June 2007 22 Clonk series now OpenClonk 1994 2010 2014 Action RTS Platform ISC CC BY SA 3 0 RedWolf Design Matthes Bender For the series Clonk 1 Clonk 2 Debakel Clonk 3 Radikal Clonk 4 World Clonk Planet Clonk Endeavor and Clonk Rage the C source code was released under the Clonk Source Code License ISC License 23 The content of the original game series was released under the CC BY NC 24 Based on Clonk Rage code base the community continues the development as OpenClonk under ISC license and content as CC BY SA Colobot 2001 2012 Educational game RTS GPLv3 GPLv3 Epsitec SA Game source released on March 26 2012 25 Colossal Cave Adventure 1976 2000 2005 Text Adventure Public domain software 26 27 28 BSD license 2017 no artwork Public domain software Will Crowther Source code variants are at least available as far back as 2000 29 An authentic version was retrieved in 2005 from a backup of Don Woods s student account at the Stanford Artificial Intelligence Lab SAIL 26 In February 2017 Eric S Raymond was involved in the release of version 2 5 under the BSD license the last release by the original author alone 30 31 32 Cylindrix 1996 2001 Arcade Shooter LGPL 2 0 only LGPL 2 0 only Goldtree Enterprises Softdisk Around December 2001 the games was ported from DOS to Windows and released under the LGPL to the public 33 34 Cytadela or The Citadel 1995 2006 FPS GPL 3 0 or later GPL 3 0 or later Virtual Design Upon its retail release Cytadela received generally favorable reviews 35 In early 2006 the original Cytadela developer offered the Amiga source code of the FPS game to the community which started a conversion project hosted on SourceForge 36 37 38 Ported to several platforms latest version released in 2013 Dandy 1983 2018 Dungeon crawl Apache 2 0 Apache 2 0 John Howard Palevich In March 2018 the source code for the Atari 8 bit version was released by Kevin Savetz with permission of Palevich 39 It was also uploaded to Palevich s own GitHub repository for Dandy which uses the Apache License 2 0 where he also maintains reverse engineered ports to a variety of programming languages 40 Dragonfire 1982 2003 action public domain software public domain Imagic Bob Smith Source code of this Imagic Atari 2600 game was released by developer Bob Smith on May 24 2003 into the public domain 41 42 43 Many more Atari games got disassembled and commented by the Atari community 44 Duelyst 2016 2023 CCG MIT CC0 game engine game code CC0 Counterplay Games Almost three years later after the servers were shut down 45 Counterplay Games released the entire game source code and assets built on top of Backbone js to the public domain under the CC0 license on GitHub 46 Eat The Whistle France 98 1998 2004 Sports game GPL 2 0 only 47 GPL 2 0 only Hurricane Studios The France 98 football Simulation video game was released for the Amiga in 1998 Around 2004 Eat the Whistle was released under the GPL 2 0 only on SourceForge 48 Later ported to many other platforms 49 Escape Towards The Unknown 1998 2004 Point and click adventure GPL 2 0 only 50 GPL 2 0 only Hurricane Studios Around 2004 Escape Towards The Unknown was released under the GPL 2 0 only on SourceForge together with the Eat The Whistle 51 52 Later ported to many other platforms Fish Fillets now Fish Fillets NG 1998 2002 Puzzle GPL 2 0 or later GPL 2 0 or later ALTAR Games Released commercially as Fish Fillets in 1998 Source released in 2002 under the GPL 53 Gladiator 1995 2002 top down perspective action game GPLv2 GPLv2 Forgotten Sages Games Released in 1995 as DOS shareware game 54 in 2002 the game s source code was released under GPL by the developers Development and porting by the game s community continued on SourceForge under the name OpenGlad 55 Glitch 2009 2013 MMO CC0 client and other parts CC0 Tinyspeck In 2013 one year after the MMO was shut down most of the artwork and parts of the code were released under the CC0 license 56 57 God of Thunder 1993 2020 Puzzle video game Public domain software Public domain music and sound effects Freeware game graphics Adept Software On March 27 2020 Ron Davis released the source code and sound assets as public domain on SourceForge 58 Gravity Force 2 1994 2008 Multidirectional shooter CC BY SA 4 0 CC BY SA 4 0 Jens Andersson amp Jan Kronqvist On September 21 2008 the developers of the Amiga shareware title Gravity Force 2 released the source code for nostalgic interest without specified license 59 In April 2017 the authors clarified the game and source code license as CC BY SA 4 0 60 Habitat 1985 2016 early MMORPG MIT MIT Randy Farmer and Chip Morningstar Lucasfilm Games The Museum of Art and Digital Entertainment received the game s source code from its original developers 61 and restored the code in a Hackathon 62 In July 2016 the source code was uploaded to GitHub under MIT license 63 64 Halloween The New Nightmare 2004 65 2021 FPS GPLv3 GPLv3 Jadeware 66 Commercial indie game first released online and by mail order Released on to GitHub in 2021 67 Inside a Star Filled Sky 2011 2011 Top down shooter Public domain software Public domain Jason Rohrer Inside a Star filled Sky for purchase for 12 68 was put by developer Jason Rohrer into public domain 69 like many other of his games 70 Kaiser II 1988 2003 economical simulation GPL GPL Carsten Strotmann In 2003 Kaiser II author Carsten Strotmann released the source code under the GPL as Free Software 71 72 Kroz 1987 2009 Maze GPL 2 0 or later GPL 2 0 or later Apogee Software Game source released on March 20 2009 20 Lemonade Stand 1973 1979 Business simulation game Public domain software no artwork Public domain software Bob Jamison Charlie Kellner MECC The Applesoft BASIC source code was available since 1979 73 74 The game was later ported to modern REALbasic and released as free and open source software for many platforms like Windows and MacOS 75 Lugaru 2005 2010 2016 assets Action adventure game GPL 2 0 or later CC BY SA 3 0 Wolfire Games Open sourced with the first Humble Indie Bundle by Wolfire Games 76 In November 2016 David Rosen relicensed all assets under the open content CC BY SA 3 0 Creative Commons license which makes Lugaru a fully free video game 77 In begin 2017 an open source HD version followed 78 79 Maelstrom 1992 1995 2010 Shoot em up GPL 2 0 only CC BY 3 0 Ambrosia Software Asteroids clone 1995 source released under GPL In 2010 Andrew Welch and Ian Gilman released the game s contents under a Creative Commons license 80 MegaBall 1991 2012 Breakout clone Apache 2 0 Apache 2 0 Mackey Software Ed Mackey The Amiga game MegaBall was programmed by Mackey Software in 1991 1993 Inspired by Taito s Arkanoid it has several features more The original author released in 2012 the source code of MegaBall under the Apache License v2 81 82 NoGravity 1996 2005 3D space space shooter Wing Commander GPLv2 GPLv2 realtech VR Source code released by realtech VR on February 16 2005 83 Nothing to Hide 2013 2013 Stealth game CC0 CC0 Nicky Case The crowdfunded surveillance privacy themed video game prototype by indie game developer Nicky Case was crowdfunded and opened under CC0 on GitHub between 2013 and 2015 84 85 86 87 88 PaybackTime 2 1997 2014 turn based tactics game public domain software public domain Niko Nevatie and Kari Luojus The turn based tactics game inspired by Laser Squad and UFO Enemy Unknown was developed by two Finish students in Turbo Pascal and x86 assembly They marketed their game as shareware for DOS in 1997 89 The authors released the game in August 2014 as public domain software including the assets 90 Pinball Construction Set 1983 2013 pinball video game MIT MIT Bill Budge Electronic Arts In 2013 Budge released the source code to the Atari 8 bit family and Apple II version of Pinball Construction Set to the public on GitHub under the MIT license 91 92 93 Planet Blupi 1997 2017 Platformer GPL 3 0 or later GPL 3 0 or later Epsitec SA Daniel Roux Denis Dumoulin Mathieu Schroeter Planet Blupie was freed source code and all media files and ported to all major platforms Linux macOS and Windows for its 20th anniversary released Open source under GPLv3 on GitHub in 2017 94 95 Speedy Blupi part of Blupi series has been released as freeware by EPSITEC too and is available at blupi org 96 Spacewar 1962 2003 Space combat Public domain software Public domain Steve Russell Source code became available around the 2003 97 RuneSword II 2001 2004 98 Turn based strategy Public domain software 99 Public domain CrossCut Games In 2004 CrossCut Games released the game into the public domain on SourceForge 100 Since then there is continuous development by the community on the game 101 Ryzom 2004 2010 MMORPG AGPL 3 0 or later CC BY SA 3 0 Nevrax In response to the folding of Nevrax the Free Ryzom Campaign was launched in order to gather enough funds from donations Crowdfunding from the community to purchase Ryzom and release the game as free software The campaign was almost successful with 172 988 of the required 200 000 gathered 102 103 On May 6 2010 Winch Gate announced the full release of source code and artwork and a partnership with the Free Software Foundation 104 105 Seven Kingdoms 1996 2008 RTS GPLv2 GPLv2 and Proprietary Enlight Source code released by Enlight in November 2008 Music is proprietary 106 107 SimCity Micropolis 1989 as SimCity 2008 as Micropolis City building game GPL 3 0 or later 108 GPL 3 0 or later Maxis Will Wright Don Hopkins Source code released by Don Hopkins under GPL in 2008 For trademark reasons released under the original working title Micropolis also known as OLPC SimCity 109 Sissyfight 2000 Returns 2014 2018 Multiplayer MIT CC BY Zimmerman Clark and Bhatnagar On April 30 2013 Zimmerman Clark and Bhatnagar announced a crowdfunding campaign on Kickstarter to revive Sissyfight 110 The campaign was funded on May 30 2013 with a final total of 22 735 111 First Beta versions were released 2014 On February 9 2018 the source code was released under the open source MIT license and the assets under the CC BY Creative Commons license on GitHub 112 Soldat 2002 2020 Run and gun MIT CC BY 4 0 Team Soldat Source code was released under MIT license on GitHub 113 114 assets followed shortly after under CC BY 4 0 115 Sopwith 1984 2000 Shoot em up GPLv2 GPLv2 David L Clark The C and x86 assembly source code to Sopwith was released in 2000 116 at first under a non commercial use license but later under the GNU GPL at the request of fans 117 Stunt Copter mid 1986 Arcade Public domain software Public domain Duane Blehm HomeTown Software After Duane Blehm death in 1988 his parents released Stunt Copter s and his other games like ZeroGravity Cairo Shootout and PUZZ L binaries and source code into the public domain 118 Super Lemonade Factory 2012 2012 2021 Puzzle platform MIT MIT GPL 3 0 only game engine game code GPL 3 0 only Initialsgames Based on the Flixel engine developed for the iOS version of Canabalt that would later become part of HaxeFlixel and inspired by it to release the source code with the purpose of enabling source ports 119 The game was released as freeware on itch io on February 2 2021 120 The entire source code repository source code and art assets for the Ouya version was released under the GPL 3 0 only license on GitHub on February 4 2021 to support the efforts for the preservation of Ouya games 121 Supernova 1987 2009 Text adventure GPL 2 0 or later GPL 2 0 or later Apogee Software Game source released on March 20 2009 20 Triplane Turmoil 1996 2009 side scrolling dogfighting flying game GPLv3 GPLv3 Dodekaedron Software In 1996 Triplane Turmoil was originally released as shareware DOS game In 2009 Dodekaedron Software Creations Oy placed Triplane Turmoil s source code documentation images and sounds under the GPLv3 hosted on SourceForge 122 123 The community continued the support and ported the game to other platforms Linux Windows via SDL Tyrian now OpenTyrian 1995 2007 Scrolling shooter GPLv2 Freeware CC BY 3 0 US 124 125 World Tree Games Productions Epic MegaGames Jason Emery Daniel Cook The OpenTyrian team ported the closed source Pascal code of Tyrian to C with permission of Jason Emery in February 2007 The graphic artist Daniel Cook released the artwork shortly after VGA Civil War Strategy Game 1995 2017 turn based strategy MIT MIT W R Hutsell In 2017 Mr Hutsell gave the source code of VGA Civil War Strategy Game to Dave Mackey who ported the game for modern platforms Windows Mac Linux with the help of SDL and other open source libraries from QuickBASIC to QB64 126 The source code is released on GitHub under a MIT license 127 Voxelquest 2014 2016 open world simulation MIT MIT Gavan Woolery After a successful crowdfunding project on Kickstarter to develop an open world simulation game in 2014 128 Gavan Woolery developed several iterations of the game s engine After running out of funding for further development he open sourced with support of the backers the game s engine on github com under MIT license in August 2016 129 130 Wander 1974 2015 Text adventure public domain public domain Peter Langston As of April 2015 the source code long thought to be lost of Wander one of the earliest mainframe text adventures could be acquired from the original author 131 132 WaterRace 2000 2014 Racing game GPLv2 GPLv2 assets CC BY NC SA 4 0 music French Touch SARL In January 2014 Pierre Olivier Latour co founder and CEO of French Touch SARL have uploaded the game s source code and assets on GitHub under the GPLv2 open source license 133 Warfare Incorporated now Hostile Takeover 2003 2014 RTS FreeBSD BSD license Spiffcode In July 2014 the game s source code and content got open sourced with the BSD license under the name Hostile Takeover on GitHub 134 135 As result the game was ported by the game s community to alternative platforms like the Pandora handheld 136 Warzone 2100 1999 2004 2008 RTS GPL 2 0 or later GPL 2 0 or later CC Pumpkin Studios Eidos Interactive 3D real time strategy game with a unit design system First source part was released by Pumpkin Studios Eidos Interactive in 2004 and the rest was released in 2008 137 Word Whiz 1988 2009 Educational game GPL 2 0 or later GPL 2 0 or later Apogee Software Game source released on March 20 2009 20 Worms 1983 2021 software toy MIT MIT David S Maynard The source code for Worms one of the initial Electronic Arts releases was uploaded to GitHub by Kay Savetz on March 17 2021 under the MIT license with permission of Maynard 138 Zork also known as Dungeon or Dungeon Adventure 1977 1978 Text adventure Public domain software Public domain Robert M Supnik Infocom Public domain software ports with source code based on the first Dungeon version of Zork are available in various repositories 139 140 Also Infocom allowed the distribution of the early Fortran version Original version from MIT 141 142 ZZT 1991 2023 Action adventure puzzle MIT no artwork Potomac Computer Systems Originally thought to be lost 143 a source code backup for ZZT 3 0 surfaced and a modified version of it with third party content removed was uploaded to GitHub by Adrian Siekierka developer of Reconstruction of ZZT under the MIT license with permission of Tim Sweeney creator of the game 144 Open source games with free of charge data edit Only the game engines in this table are developed under an open source license which means that the reuse and modification of only the code is permitted The assets are provided free of charge to the final user but with some restrictions Note that both the engine and the game code must be available under a license approved by the OSI and or the FSF if it was made with a licensed engine Title First release Source code release Genre Engine license Content license Original developer Additional information Allegiance now FreeAllegiance 2000 2004 real time strategy and Space combat simulator MIT earlier Shared Source 145 Freeware Microsoft Research Released by Microsoft Research under a shared source license MSR SSLA 2004 146 On July 27 2017 Microsoft Research changed the license from MSR shared source license to MIT license 147 Amulets amp Armor 1997 2013 first person role playing video game GPL 3 0 only Freeware United Software Artists In 2013 Amulets amp Armor was re released as freeware on the game s official site and the source code under GPL 3 0 only on GitHub 148 149 Work continues for ports to newer systems Windows MacOS and general bug fixes 150 151 Ares now Antares 1996 2008 Space Strategy video game LGPLv3 152 CC BY NC SA CC BY NC ND Freeware Nathan Lamont Bigger Planet Software Released in 2008 Under continued development for modern systems as Antares via GitHub 153 Avara 1996 2016 Shooter game MIT Freeware Ambrosia Software Juri Munkki The MacOS classic game became open source in 2016 when Munkki released the source code upon the game s 20th anniversary 154 Buzz Aldrin s Race Into Space now Race Into Space 1993 2007 Simulation GPLv2 155 Freeware 156 Strategic Visions Fritz Bronner A port of Buzz Aldrin s Race Into Space to modern operating systems The license fell back to Bronner as he had a contract clause with Interplay stating that in case Interplay went bankrupt or no distribution happened for some time 156 Cart Life 2011 2014 Simulation Artistic 2 0 MIT like engine game code Freeware Richard Hofmeier In March 2014 the game was removed from all digital distributions and the source code and game was made available for free online with Hofmeier saying he was finished supporting the game 157 His webpage went later offline 158 but the source code was mirrored on GitHub 159 160 Corncob 3D 1993 2016 Flight simulator Public domain software Freeware Pie in the Sky Kevin Stokes The game became around 2016 freeware and open source 161 Dink Smallwood 1997 2003 Action RPG Zlib inspired own license 162 Freeware 163 Robinson Technologies Source code published on July 17 2003 from Seth Robinson 164 2008 Artwork published without some sounds under a Zlib license 165 In October 2017 the HD version became fully open source and freeware too 166 The source code became available on GitHub shortly after 167 Gates of Skeldal 1998 2008 Dungeon crawler role playing video game GPL 3 0 or later Freeware Napoleon Games On 19 November 2007 the game was made freeware by the Czech developer in 2008 the source code was released under GPL 3 0 or later on a SourceForge repository 168 169 Later it was translated by fans to English and ported to linux 170 Glider 4 0 1991 2016 Flight simulator MIT Freeware John Calhoun On January 26 2016 the source code for Glider 4 0 was uploaded to GitHub 171 Glider PRO 1994 2016 Flight simulator GPL 2 0 only Freeware John Calhoun On January 27 2016 the source code graphics and sound data for Glider PRO were released on GitHub with the source code being licensed under the GNU General Public License v2 172 173 Gloom 1995 2017 FPS unlicense for historical purposes Black Magic In January 2017 the assembly and BlitzBasic 2 source code of the Amiga Doom clone Gloom was released as public domain software under unlicense on GitHub 174 The assets were released for historical and archiving purposes 175 Gunocide II 2000 2001 Galaga like 2D shooter GPLv2 Freeware Alexander Bierbrauer and Oliver Weiler Developed around 2000 176 After being succesless commercially published via a publisher 177 the game was released as freeware and under GPL 2002 ported to Linux and hosted on SourceForge as G2ex 178 179 H Craft Championship 2007 2015 science fiction racing game zlib license Freeware Irrgheist H Craft Championship was developed by the independent game studio Irrgheist 180 and released by Manifesto Games 181 Akella in 2007 182 In 2014 the developers released the game as freeware 183 and the source code under the zlib license in February 2015 184 185 Haunts The Manse Macabre 2012 2012 turn based strategy BSD 3 Clause 186 CC BY NC SA Rick Dakan The 2012 with 29 000 crowdfunded 187 and in Go programmed game was put on GitHub after the money for further development run out 188 189 While a volunteer keeps updating the almost finished prototype 190 the against the Go 1 0 API build game fails to compile with newer compilers and Go versions Hypercycles 1995 2017 Shooter GPL 3 0 only Freeware Bob Hays Released in January 2017 on GitHub 191 192 As August 16 2020 the repository was removed from GitHub The code has been re uploaded on GitHub 193 Infinity 2002 2016 RPG GPL 3 0 or later CC BY NC ND 4 0 CC BY NC SA 4 0 Affinix Software Developed in 2002 as commercial Game Boy Color title 90 finished the game was never published Infinity was released as non commercial freeware with source code in August 2016 194 195 196 and after a successful Kickstarter campaign in August 2021 development was restarted by Incube8 Games 197 198 Iron Seed 1994 2013 Space trading and combat simulator GPLv3 Freeware Channel 7 Released as freeware by the authors to promote the development of Iron Seed 2 in the 2000s Source opened under the GPL by the developers in 2013 199 Magic Land Island now Pocket Island 2011 2012 Casual game MIT CC BY NC SA Wooga Magic Land Island was launched during the GDC Europe in August 2011 In June 2012 the HTML5 game was open sourced under the name Pocket Island on GitHub under MIT license and with the assets under Creative Commons license CC BY NC SA 200 201 Marathon 2 Durandal now Aleph One 1995 2000 FPS GPLv2 Freeware Bungie Released by Bungie on January 17 2000 202 Marathon Infinity now Aleph One 1996 2011 FPS GPL 3 0 or later CC BY NC SA 3 0 Bungie Released by Bungie in 2011 203 Meridian 59 1995 2012 MMORPG GPL 2 0 only excluding compression and audio libraries Freeware Archetype Interactive As of February 2010 Meridian 59 has been turned over to the original technical developers Andrew and Chris Kirmse On September 15 2012 they released the game to the public as Freeware and most of the source code under the GPLv2 license 204 The Pit Puzzle 1997 2011 Puzzle game Apache 2 0 Freeware 205 Abe Pralle Plasmaworks The DOS game source code was released around 2011 by the author Abe Pralle under Apache 2 0 License on GitHub 206 Postal 1997 2016 Top down shooter GPL 2 0 only Freeware Running with Scissors In 2015 the Running with Scissors developers announced that they will release the source code of the game if someone promises to port it to the Dreamcast 207 In June 2016 the developers gave the source code to a community developer who ported the game to Linux for the OpenPandora handheld 208 209 On December 28 2016 the source code was released on Bitbucket under the GPLv2 210 211 Project Starfighter 2001 2008 Shoot em up GPLv2 212 Freeware 213 Parallel Realities Star Control II now The Ur Quan Masters 1992 2002 Action RPG GPLv2 CC BY NC SA 2 5 Toys for Bob Fred Ford Paul Reiche III Source code of the 3DO version GPL released in 2002 214 Star Ruler 2 2015 215 2018 Real time strategy 4X MIT CC BY NC 2 0 Blind Mind Studios Released on GitHub as an open source project including assets under the CC BY NC but not music on July 22 2018 216 217 Starshatter The Gathering Storm 2004 2011 Space combat simulator New BSD License Freeware Destroyer Studios Matrix Games Source code released by Destroyer Studios Matrix Games on December 14 2011 218 219 Strange Adventures in Infinite Space 2002 2005 2009 Space Roguelike GPL 3 0 or later CC BY NC 4 0 Digital Eel Source was released under GPL by Digital Eel in 2005 220 221 Content became freeware 2009 222 License changed to GPLv3 and assets to CC BY NC 4 0 on May 18 2020 223 Team 47 GoMan 1997 224 225 1998 Mech game Public domain software Proprietary 47 TEK Released artwork and source code to public in May 1998 226 227 As the Internet Archive has not saved the content of the now offline GoMan page in the end of the 1990s currently there are no known mirrors on the web the source code seems as of 2017 to be lost 227 As of March 2022 source code has been uploaded to Github Tread Marks 2000 2017 Tank Combat Racing GPL 3 0 or later Freeware Longbow Digital Arts Seumas McNally Won in 2000 the Seumas McNally Grand Prize On January 20 2017 the source code was released as open source on github com and the game itself as freeware 228 229 A port to Linux and MacOS is in progress 230 In September 2017 a version for the Linux based OpenPandora was released 231 Tribal Trouble 2005 2014 RTS GPLv2 Freeware Oddlabs In September 2014 the game s source code was released to the public on GitHub and is now open source under the GPLv2 232 Development continues in a community fork 233 Tribes 2 2001 2012 FPS MIT Proprietary engine game code Freeware Dynamix Many commercial titles were developed using the Torque engine 234 GarageGames released Torque 3D under the MIT License on September 20 2012 235 The Tribes 2 source code beside the Torque engine is not available 236 Open source games edit Only the game engines in this table are developed under an open source license which means that the reuse and modification of only the code is permitted The assets are not provided for free and must be bought by the final user Note that both the engine and the game code must be available under a license approved by the OSI and or the FSF if it was made with a licensed engine Title First release Source code release Genre Engine license Original developer Additional information Age of Pirates Captain Blood 2010 2022 Action adventure game Hack and slash GPL 3 0 or later 1C Seawolf Studio Source code of game engine was released on GitHub under GPLv3 on November 28 2022 237 Age of Pirates 2 City of Abandoned Ships 2009 2021 Role playing game GPL 3 0 or later Akella Source code of Storm Engine released on GitHub under GPLv3 in a 2021 and support Sea Dogs To Each His Own and Age of Pirates 2 City of Abandoned Ships 238 239 Amnesia A Machine for Pigs 2013 2020 Survival horror GPL 3 0 or later The Chinese Room On September 23 2020 Frictional Games released the source code for this game 240 Source code was released on GitHub under the GPLv3 241 Amnesia The Dark Descent 2010 2020 Survival horror GPL 3 0 or later Frictional Games On September 23 2020 Frictional Games released the source code for this game on its 10th release anniversary 240 Source code was released on GitHub under the GPLv3 242 Analogue A Hate Story 2012 2013 Visual novel MIT Public domain software Proprietary engine game code Love Conquers All Games Developed using the Ren Py engine the game code for Analogue A Hate Story was released on May 4 2013 under a public domain equivalent license The source code release includes the entire script of the game for context but the script remains proprietary 243 Arx Fatalis now Arx Libertatis 2002 2011 RPG GPL 3 0 or later Arkane Studios The design of Arx Fatalis was heavily influenced by Ultima Underworld Game source released by Arkane Studios on January 14 2011 244 Based upon this source code the formed Arx Libertatis project created Fan made patches and Source ports 245 246 Aquaria 2007 2010 Action adventure GPL 2 0 or later Bit Blot Open sourced with Humble Indie Bundle 247 Blake Stone Planet Strike 1994 2013 FPS GPL 2 0 or later 248 Apogee Software Released in 2013 to promote the sale of the Apogee Throwback Pack on Steam 249 250 Canabalt 2009 2010 Cinematic platformer MIT Proprietary engine 251 game code 252 Adam Saltsman Released by Adam Saltsman in 2010 253 Catacomb 1989 2014 Top down shooter GPL 2 0 or later Flat Rock Software Released by Flat Rock Software on June 5 2014 on GitHub 254 Catacomb 3D 1991 2014 FPS GPL 2 0 or later Flat Rock Software id Software Released by Flat Rock Software on June 5 2014 on GitHub 254 The Colony 1988 2023 FPS Apache 2 0 Dave Smith Source code for the PC Mac and Amiga versions released by Smith on GitHub on June 6 2023 with the source code under the Apache License 2 0 255 Command amp Conquer Command amp Conquer Red Alert 1995 2020 RTS GPL 3 0 or later Westwood Studios The games code was released along with the Command amp Conquer Remastered Collection in order to aid in the development of mods It can be used to build mods for the remaster but due to some missing bits that are substituted by the remaster s own closed source engine it can not be used to directly re build the original unremastered games from them 256 However down stream projects such as Vanilla Conquer have allowed source ports of the unremastered games to be developed by developing replacements for the missing code 257 Commander Keen in Keen Dreams 1991 2014 Platformer GPL 2 0 or later id Software In September 2014 after an Indiegogo crowdfunding campaign 258 the game s source code was released on GitHub 259 260 CoreBreach 2011 2012 Racing game MIT GPL 2 0 only engine game code 261 CoreCode Futuristic anti gravity racing game with combat Source was released after a sales quota was met 261 Cortex Command 2012 2019 Action game AGPL 3 0 only Data Realms LLC The indie game was in development since 2001 which won an IGF award in 2009 262 was finally released in 2012 263 In July 2019 the source code was released under AGPL 3 0 only on GitHub 264 265 As of end of 2019 the work on a community continuation dubbed Cortex Command Community Project is ongoing 266 Delver 2012 2018 First person action roguelike dungeon crawl Apache 2 0 zlib engine game code Priority Interrupt Developed using the libGDX framework on November 15 2018 Chad Cuddigan released the source code under the GPLv2 267 Changed to a modified version of the zlib license on November 23 2018 268 and changed to the regular zlib license on September 21 2020 269 Descent 3 1999 2024 FPS MIT Outrage Entertainment On April 16 2024 Kevin Bentley one of the programmers of the game released the source code for Descent 3 on GitHub 270 under authorization of Matt Toschlog 271 co owner of the copyright holder of the game 272 Doom 3DO 1995 2014 FPS MIT Logicware On November 30 2014 the source code of the 3DO Interactive Multiplayer port of the game was released by Rebecca Heineman sole developer of the port under an MIT license a different license than the Doom version for Linux and the Atari Jaguar port 273 274 275 276 Doom and Doom II Hell on Earth Linux 1993 1994 1997 1999 FPS GPL 2 0 or later Id Software Game source released on December 23 1997 placed under GPL 2 0 or later on October 3 1999 Doom SNES 1995 2020 FPS GPL 3 0 or later Sculptured Software On July 14 2020 Randy Linden uploaded the source code for his Super Nintendo Entertainment System conversion of Doom to GitHub 277 Doom 3 2004 2011 FPS GPL 3 0 or later Id Software Game source released on November 22 2011 278 Doom 3 BFG Edition 2012 2012 FPS GPL 3 0 or later Id Software Source code released on November 26 2012 on GitHub 279 DROD series 1997 2000 Puzzle game MPLv1 1 280 Webfoot Erik Hermansen After the author reacquired the rights to the game from the original publisher Webfoot 281 he released the source code of the game engines 280 282 The source code releases include DROD King Dugan s Dungeon DROD Journey to Rooted Hold DROD The City Beneath DROD Gunthro and the Epic Blunder DROD The Second Sky and DROD RPG Tendry s Tale without its media assets 283 Eldritch 2013 2014 FPS roguelike zlib License Minor Key Games In April 2014 the game s source code was released to the public under a permissive zlib license Content still proprietary and game being sold 284 285 Flotilla 2010 2020 3d tactic game Ms PL zlib engine game code Blendo Games Indie game developer Blendo games released the source code to Flotilla on its 10th release anniversary 286 287 The source code is Zlib licensed on GitHub but assets are not included 288 Gish 2004 2010 Action GPL 2 0 or later Cryptic Sea Source opened with Humble Indie Bundle by Wolfire Games 289 290 Glypha III 1990s 2016 Arcade MIT John Calhoun On January 27 2016 the source code graphics and sound data for Glypha III were released on GitHub with the source code being licensed under the MIT License 171 291 Updated ports for MacOs and iPhone were created afterward 292 293 294 A cross platform OpenGL based port was released around May 2018 on GitHub 295 Good Robot 2016 2020 Multidirectional shooter MIT Pyrodactyl Games On August 3 2020 Arvind Raja Yadav from Pyrodactyl Games released the source code for three of their games Unrest Will Fight for Food and Good Robot under the MIT License on GitHub 296 Hammerfight 2009 2011 2D physic based combat game zlib license 297 Konstantin Koshutin For the third Humble Indie Bundle 298 299 Ryan C Gordon ported the underlying game engine Haaf s Game Engine to Linux and Mac OS X and released source code under the zlib license 300 301 Relish Games released the original version of HGE 1 8 1 for Windows DirectX to GitHub under zlib license too 302 Heretic 1994 1999 FPS GPL 2 0 only Raven Software Game source released on January 11 1999 under a very restrictive license 303 304 relicensed to GPL on September 4 2008 305 306 307 The ACC script compiler was not included in the GPL re release Hexen Beyond Heretic 1995 1999 FPS GPL 2 0 only Raven Software Game source released on January 11 1999 under a very restrictive license 303 304 relicensed to GPL on September 4 2008 305 306 307 The ACC script compiler was not included in the GPL re release Hexen II 1997 2000 FPS GPL 2 0 only Raven Software Game source released on November 10 2000 308 Hovertank 3D 1991 2014 FPS GPL 2 0 or later Flat Rock Software id Software Released by Flat Rock Software on June 5 2014 on GitHub 254 Lemma 2014 2014 Voxel FPS open world parcour 309 MIT Evan Todd Despite an unsuccessful crowdfunding campaign in 2014 310 Lemma was released commercially by the developer DRM free and also on Steam The source code is openly developed and available on GitHub under a MIT license 311 312 Little Big Adventure and Little Big Adventure 2 1994 1997 2021 Action adventure GPL 2 0 only Adeline Software International Source code released on GitHub under the GPL 2 0 only license by 2 21 the current copyright holders 313 Machines Wired for War 1999 2020 Real time strategy GPL 3 0 or later Charybdis Nightdive Studios The game was released by the new rights holder Nightdive Studios in 2020 314 The source code is under GPLv3 on GitHub 315 The assets are available too from the original developer s webpage 316 Monster RPG 2 2010 2012 JRPG zlib License Nooskewl After a successful Indiegogo campaign released by Nooskewl under a Public domain like license Give it Your Own License on November 11 2012 317 318 Later changed to zlib license and the content sold again to be able to pay the server bills 319 Myst Online Uru Live 2007 2010 MMORPG GPLv3 Cyan Worlds Myst Online Uru Live struggled to attract subscribers and was canceled after its first year Cyan release the game as an open source game in 2010 320 Natural Selection 2002 2014 FPS GPLv2 most code custom external libraries 321 Unknown Worlds Entertainment In January 2014 Unknown Worlds released the source code for download on GitHub 322 The Operative No One Lives Forever 2000 2010 FPS GPL Monolith Productions In 2001 Monolith Productions released a set of editing tools for No One Lives Forever that included the level editor and model editor used for development 323 The team also released the source code for NOLF version 1 003 on Windows that year to support the fan base by offering the tools to create their own levels 324 325 It is available both as a download as well as on the Game of the Year Edition CD ROM 323 Years later around 2013 Lithtech source code became available on GitHub under GPL 326 and work for merging game code and engine started 327 No One Lives Forever 2 A Spy in H A R M s Way 2002 2011 FPS GPLv2 328 Monolith Productions Source code released by Monolith Productions Sierra Entertainment as part of a modding toolkit 329 Overgrowth 2017 2022 Action Apache 2 0 Wolfire Games On April 21 2022 Wolfire Games released the source code to Overgrowth on GitHub under the Apache License 2 0 330 Pararena 2 1992 2016 Action sport game MIT John Calhoun On January 27 2016 the source code was released on GitHub licensed under the MIT license 331 332 Penumbra Overture 2007 2009 Survival horror with FPS aspects GPL 3 0 or later Frictional Games Developed by Swedish 333 developer Frictional Games the game blends the genres of survival horror first person shooter and adventure Open sourced with Humble Indie Bundle 334 Quake 1996 1999 FPS GPL 2 0 or later Id Software Game source released on December 21 1999 Quake II 1997 2001 FPS GPL 2 0 or later Id Software Game source released on December 22 2001 Quake III Arena 1999 2005 FPS GPL 2 0 or later Id Software Game source released on August 19 2005 Quake 4 2005 2021 FPS GPL 2 0 or later Raven Software Adapted to the GPL id Tech 4 source code from Doom 3 with some issues remaining 335 Raptor Call of the Shadows 1994 2023 Scrolling shooter GPL 2 0 or later Cygnus Studios Released on October 1 2023 on GitHub 336 Red Dog Superior Firepower 2000 2022 Shooter MIT Argonaut Games Source code uploaded on GitHub on September 26 2022 under the MIT license by Matt Godbolt one of the three programmers of the game under authorization of Jez San founder of Argonaut Games 337 Return to Castle Wolfenstein 2001 2010 FPS GPL 3 0 or later Gray Matter Studios Nerve Software The source code for Return to Castle Wolfenstein and Enemy Territory was released under the GNU General Public License GPL on August 12 2010 338 339 Revenge of the Titans 2010 2011 Tower Defense RTS BSD 3 Clause Puppy Games Java based game Source code was released by Puppy Games with the success of the second Humble Indie Bundle 340 Rise of the Triad 1994 2002 FPS GPL 2 0 or later Apogee Software 3D Realms Game source released on December 20 2002 341 Serious Sam Serious Engine 2001 2016 FPS GPL 2 0 only Croteam In March 2016 Croteam released Serious Engine v1 10 as free and open source software on GitHub under the GNU General Public License 342 343 Seven Kingdoms II 1999 2009 RTS GPLv2 Enlight Source code released in August 2009 Shogo Mobile Armor Division 1998 1998 FPS GPL Monolith Productions In 1998 SDK released the game logic for modders 344 The Lithtech engine was not included as source code Around 2013 Lithtech s source code became available on GitHub under the GPL 326 and the work of merging the game logic and the engine started 327 As of the end of 2019 this reworked NOLF2 LithTech engine reached a buildable state under Windows and the work continues 345 Siege of Avalon 2000 2003 RPG LGPL Digital Tome Source code released June 23 2003 346 Later one of the original developers announced the preparation of a re release of SOA but nothing came out of it 347 In September 2017 a community developer managed to fix the dependencies of the Open source release recompile the executable fixing several bugs and introducing higher resolution support for the game 348 Soul Ride 2000 349 2003 Snow board simulation sport game GPLv2 350 Slingshot Game Technology On 20 Jan 2003 Soul Ride s game engine source code was released to allow ports to alternative OSes 351 Spacebase DF 9 2013 2015 Space simulator CPAL Double Fine After Double Fine ended the support of the controversy ridden and incomplete game on end of 2014 352 fans have been working to continue the game s development with the availability of the source code in May 2015 under the CPAL open source license 353 First patch became available in October 2015 354 Spear of Destiny 1992 1995 FPS GPL 2 0 or later 355 id Software The source code of Wolfenstein 3D which also covered Spear of Destiny was released on July 21 1995 Spectromancer 2008 2020 Turn based strategy BSD 3 Clause Proprietary engine game code Three Donkeys LLC Apus Software On March 4 2020 Ivan Polyacov from Apus Software released the source code to the Apus Game Engine the in house game engine by Apus Software used for Spectromancer and Astral Heroes after reaching the 50 tier on his Patreon 356 The game code to Astral Towers was also released to patrons 357 358 Speed Haste 1995 2012 racing video game public domain like license Javier Arevalo Baeza In 2012 the game s developer Javier Arevalo Baeza released the Borland C source code minus some commercial library part for you can do whatever you want with this code on GitHub 359 Star Wars Jedi Knight II Jedi Outcast 2002 2013 First Third person shooter GPL 2 0 only Raven Software Release of the source code by Raven Software and Activision coincided with the closing of LucasArts by Disney 360 Star Wars Jedi Knight Jedi Academy 2003 2013 First Third person shooter GPL 2 0 only Raven Software Release of the source code by Raven Software and Activision coincided with the closing of LucasArts by Disney 360 System Shock 1994 2018 FPS GPL 3 0 or later Night Dive Studios In April 2018 the Mac version s source code was released by Night Dive on GitHub 361 fulfilling a 2016 promise 362 363 364 After one month of development a cross platform source port called Shockolate for modern compilers and platforms was released by community developer Chad Cuddigan 365 To Heart 2 2004 2006 Visual novel GPLv2 Aquaplus Its source code was released by Aquaplus under the GNU General Public License on December 22 2005 along with the source code for Aruru to Asobo Tears to Tiara and Kusari 366 367 This decision was made due to the inclusion of Xvid derived code Xvid being distributed under the same license 366 367 The source code for all four games is distributed upon request in CD R format 366 A copy of the original source code is hosted on GitHub 368 as also an continued engine project 369 To the Moon 2011 2014 role playing game GPL 2 0 or later Freebird Games To the Moon was developed using RPG Maker XP engine in 2011 In January 2014 To the Moon was also released for OS X and Linux with the Humble Bundle X 370 Edward Rudd ported the game with the GPLv2 RPG Maker XP game engine recreation MKXP 370 371 other ports followed later 372 Also a successor game by Freebird games A Bird Story was ported to Linux under usage of MKXP 373 Toki Tori 2 2013 2021 puzzle platform game GPL 2 0 only Two Tribes On December 17 2021 Two Tribes released the source code to their in house engine used for games like Toki Tori 2 and Rive under the GPL 2 0 only license on GitHub 374 Unrest 2014 2020 Role playing video game MIT Pyrodactyl Games On August 3 2020 Arvind Raja Yadav from Pyrodactyl Games released the source code for three of their games Unrest Will Fight for Food and Good Robot under the MIT License on GitHub 296 Urban Chaos 1999 2017 Action adventure game MIT Mucky Foot In May 2017 Mucky Foot s Mike Diskett released the source code of Urban Chaos under the MIT license on GitHub 375 Vangers 1998 2016 racing and role playing genre GPLv3 K D Lab In March 2016 Vangers source code was released 376 under GPLv3 license Data was not freed though so one still needs data files from Steam or GOG com released in order to run the game Wolfenstein 3D 1992 1995 FPS GPL 2 0 or later 355 id Software The source code of Wolfenstein 3D which also covered Spear of Destiny was released on July 21 1995 Wolfenstein Enemy Territory 2003 2010 FPS GPL 3 0 or later Splash Damage id Software Game source released on August 12 2010 377 339 338 World in Conflict server code 2007 2017 Real time strategy game GPL 2 0 or later 378 Ubisoft Game source released in 2017 by ubisoft after support ended in 2014 379 Source available games with free of charge data edit Video games in this table are source available but are neither open source software according to the OSI definition nor free software according to the Free Software Foundation If the source code is given out without specified license or public domain waiver it has legally to be considered as still proprietary due to the Berne Convention The assets are provided free of charge to the final user but with some restrictions Title First release Source code release Genre Engine license Content license Original developer Additional information Agony 1992 2020 Shoot em up non commercial use Freeware Art amp Magic Around 2010 graphic artist Franck Sauer started to offer the game s binary files ADF format for free download on his personal webpage making the game Freeware 380 On July 4 2020 Yves Grolet programmer of the game uploaded all his Amiga development files which included full source code for Agony to WeTransfer 381 Anacreon Reconstruction 4021 1987 2004 4x game no license given Freeware George Moromisato Developed by George Moromisato in 1987 Around 2004 the source code of the DOS version 2 00 was released 382 Beneath a Steel Sky 1994 2003 Point and click adventure Beneath a Steel Sky Freeware License Beneath a Steel Sky Freeware License Revolution Software The assembly language source code of the game was made available to the public and ScummVM in August 2003 383 384 The source code availability made it possible for the ScummVM project to support the game which allows the game to be played on Windows OS X Linux Windows CE and other compatible operating systems and platforms Beyond Castle Wolfenstein 1985 2005 Stealth game no license given Freeware Silas Warner The reconstructed source code and the ported game was released by Silas Warner s widow in 2005 385 Beyond Protocol now After Protocol 2008 2011 persistent space MMORTS non commercial public license Freeware Dark Sky Entertainment Initial design of Beyond Protocol began in 1991 386 A scaled up beta program began Nov 15th 2007 387 with an open beta in 2008 When due to financial issues the game has been shut down the source code was released on 4 May 2011 on SourceForge to the public 388 Based on this source code community organized development continues until today as After Protocol 389 Bob s Game 2004 2016 puzzle action RPG Proprietary Freeware Robert Pelloni In August 2016 the source code of the game was released on GitHub under a non commercial source available software license 390 to allow the community to contribute The author claims that he wrote the game originally in C switched then to Java and later converted it with an automatic code converter to C 391 Carnivores 2 1999 2013 Simulation Proprietary Freeware Action Forms A version from 2013 is available on assembla 392 Around 2017 the source code was released via Moddb 393 Crystal Mines 1989 2011 Arcade Custom permissive license Freeware Ken Beckett Color Dreams In August 2011 Ken Beckett the programmer of the NES game Crystal Mines released the source code under a custom permissive license to the public 394 395 Artwork still proprietary but can be shared for non commercial personal use 396 Digger 1983 2004 Arcade Proprietary Freeware Windmill Software The original source code became available in September 2004 for historical interest together with source code of other Windmill Software games as Styx 397 398 There is also an earlier free software reverse engineered variant available by Andrew Jenner called Digger Remastered ported for many platforms 399 Dungeons of Daggorath 1982 2001 3D Dungeon crawler Freeware Freeware DynaMicro Douglas J Morgan After years of no further distribution from the publisher Radio Shack of the game the distribution rights fell back to the developers Morgan released game around 2001 under a freeware like license to the public also offering the source code 400 401 Following the game s community has created ports for PC 402 Linux 403 RISC OS 404 and PSP 405 Enemy Nations 1997 2005 406 2006 407 408 RTS own non commercial license 409 non commercial Freeware 409 Windward Studios Game source and artwork was released by Windward Studios under a non commercial license around 2005 2006 Fort Apocalypse 1982 2015 action CC BY NC ND 2 5 CC BY NC ND 2 5 Steve Hales Synapse Software In 2007 the Atari 8 bit game was relicensed to a CC BY NC ND 2 5 by Steve Hales and released on IgorLabs 410 On April 23 2015 Steve Hales released the assembler source code to Fort Apocalypse on GitHub also under CC BY NC ND 2 5 for historical reasons 411 Free Fall 1983 1999 Beat em up Freeware Ian Bell Acornsoft In 1999 developer Ian Bell released the video game s BBC Micro assembly source code on his website 412 Semi serious he considers it the first ever Beat em up video game Flow 2006 2009 Life simulation For educational purposes Freeware Thatgamecompany Jenova Chen Around 2009 the flash source code was made available for educational purposes by the developers 413 414 HoverRace 1996 2008 Racing originally time limited license later non commercial GrokkSoft HoverRace SourceCode License 415 416 Freeware GrokkSoft Was first published under a time limited license In 2008 re newed with an infinite duration license 417 In Pursuit of Greed 1996 2014 FPS non commercial use for educational and personal use only Freeware non commercial Mind Shear Software Based on Softdisk Publishing s Raven engine which powered also ShadowCaster The game was released including the engine later by the developer as non commercial freeware in 2014 418 419 420 Kiloblaster 1992 2008 Arcade Own license 421 Freeware with additional restriction Epic MegaGames Allen Pilgrim declared the registered version freeware and released also the source code on August 4 2008 422 423 Kumquat amp Cantaloupe 1996 2012 Maze undefined Freeware Dave Schofield The Amiga games Kumquat amp Cantaloupe originally released as shareware titles were re released as freeware with source code included by the author in November 2012 424 425 Magus 1995 2014 Rogue like Proprietary Freeware Ronny Wester Around 2014 archived on GitHub from other now offline sources 426 A SDL port is in progress 427 In 2000 Wester released also the Borland Pascal 7 source code of Cyberdogs excluding some libraries he had licensed on his website 428 Roboforge 2001 2008 Multiplayer Strategy game RoboForge Personal Non Commercial Use End User License Freeware Liquid Edge Announced the game in July 2000 429 by Liquid Edge the game was released on May 23 2001 430 From July 2008 RoboForge became an Open Source project with the source code for the Java based client and server under a non commercial license and as freeware 431 The game s community continues development Rocky Racers 2002 432 2004 433 Racing game Non Commercial license Freeware Positech Games Released around 2002 by Positech Games the game s C source code was released in July 2004 to the public for free 433 Savage The Battle for Newerth 2003 2007 online Real time strategy FPS no license proprietary Freeware 434 S2 Games The game was turned freeware by S2 Games on September 1 2006 In 2007 the source code became available to the game community 435 who now continues development 436 The game can be played on Windows Mac OS X and Linux Sea Dragon 1982 2015 Scrolling shooter Public domain software Adventure International In 1995 Wayne Westmoreland co designer of the game placed the original TRS 80 binaries for Sea Dragon in the public domain 437 On December 19 2015 Kevin Savetz uploaded the source code for the Atari 8 bit version of Sea Dragon under no license to the Internet Archive with permission of Russ Wetmore developer of the port 438 Stellar Conquest III Hostile Takeover 1994 439 2006 Stellar Conquest inspired Space simulation open source freeware non commercial Freeware non commercial redistribution allowed NecroBones Ed T Toton III The Turbo Pascal 6 source code for the VGA DOS game was released in February 2006 together with the game itself as freeware by the developer 440 Stellar Frontier 1997 2008 Space simulation STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE non commercial license 441 STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE non commercial license Stardock Stellar Frontier was developed by Doug Hendrix in 1995 and was later licensed and published by Stardock On August 4 2006 Stardock Systems closed the official master server On November 18 2008 the game source code was released under an own non commercial license 442 As result the game s community took over the support of the game and improved the game fixed the bugs and security holes with self made patches 443 Treasures of a Slaver s Kingdom 2007 2010 Z machine Text adventure game Freeware Freeware Cumberland Games amp Diversions S John Ross released the commercial Treasures of a Slaver s Kingdom which won the XYZZY Award 2007 for the best NPC in 2010 with Z machine source code as freeware 444 More source code of text adventure from the 1970s and 1980s are available at the archive 445 World Train Royale 2009 2011 Tycoon game Freeware Versus Software Sold around 2009 for 10 dollars 446 the game source code was released on 26 June 2011 on SourceForge 447 448 Xargon 1993 2008 Platformer own license 421 Freeware with additional restrictions Epic MegaGames Game source released in 2008 by the programmer Allen Pilgrim 449 A SDL port followed later by Malvineous 450 Source available games edit Video games in this table are source available but are neither open source software according to the OSI definition nor free software according to the Free Software Foundation If the source code is given out without specified license or public domain waiver it has legally to be considered as still proprietary due to the Berne Convention The assets are not provided for free Title First release Source code release Genre Engine license Content license Original developer Additional information 3 D Ultra Pinball Thrill Ride 2000 2020 Pinball Proprietary Proprietary Left Field Productions On May 13 2020 Dave Ashley added the source code of the Game Boy Color port to his Game Boy Color development repository 451 Airline Tycoon 1998 2015 Simulation game Proprietary 452 Commercial Spellbound Entertainment On 24 March 2015 Airline Tycoon Deluxe was re released on the digital distribution platform gog com including the source code 453 Alien 3 1992 2019 Run and gun Proprietary Proprietary Probe Software On May 19 2019 Michael J Archer uploaded the source code for the Commodore 64 version of the game to GitHub 454 Alien Breed 3D II The Killing Grounds 1996 1997 FPS Proprietary Team17 In March 1997 Team17 made the source code of Alien Breed 3D and Alien Breed 3D II freely available on the cover CD of Amiga Format magazine issue 95 455 456 457 Alien vs Predator Atari Jaguar game 1994 2008 FPS Proprietary Rebellion Developments Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Aliens versus Predator 2000 2001 461 FPS Own non commercial license 462 Proprietary Rebellion Developments Source code released by Rebellion Developments 2001 An unofficial patch project for the PC version based on the source code was released and is still updated 461 Alpha Waves 1990 2009 early 3D exploration game with platform aspects Christophe de Dinechin Released in 1990 as one of the earliest 3D games 463 with full 6 axis degree of freedom In 2009 author Christophe de Dinechin released the complete assembly and GFA BASIC source code of the Atari ST version 464 465 There is also a started PC port in C on SourceForge by the original author 466 467 Altered Beast 1989 2019 Beat em up Proprietary Proprietary Software Studios On May 19 2019 Michael J Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub 454 Anachronox 2001 2001 partly RPG Proprietary Proprietary Ion Storm Some bits of code distributed with the official editor citation needed Anodyne 2013 2020 Action adventure Anodyne License Anodyne License Analgesic Productions On April 4 2020 Melos Han Tani from Analgesic Productions released the source code of Anodyne under a custom permissive license 468 469 Army Men III 2013 2018 Third person shooter Non commercial use Freeware Neotl Empire Army Men III was released in early access in 2013 and under development until its cancellation in 2016 Two years later the unfinished game was released as open source on SourceForge in April 2018 470 Atomic Robo Kid 1990 2019 Scrolling shooter Proprietary Proprietary Activision On May 19 2019 Michael J Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub 454 Attack of the Mutant Camels 1989 2012 Scrolling shooters Jeff Minter In 2012 the assembly language source code of the Konix version of the game was released on GitHub 471 472 Aztaka 2009 2011 Action role playing game Proprietary Citeremis In 2011 Independent game developer Citeremis released a Developer s Edition of Aztaka for 9 99 which included also the source code of the game 473 474 Balance of Power 1985 2013 Government simulation game Chris Crawford In August 2013 Chris Crawford released source code of several of his games from his career to the public 475 fulfilling a GDC 2011 given promise 476 Beside Balance of Power he released all the source code he could recover for instance Trust amp Betrayal The Legacy of Siboot Excalibur Gossip Eastern Front 1941 Scram and Legionnaire Batman Returns 1993 2015 sidescrolling Beat em up for educational purposes for educational purposes ACME Chris Shrigley In March 2015 programmer Chris Shrigley who worked on the Sega CD version found the Batman Returns source code and released it for educational purposes to the public 477 He released also the source code of Magician Cliffhanger Gargoyles and some other games from his working career 478 Disney s Beauty and the Beast A Board Game Adventure 1999 2020 Board Proprietary Proprietary Left Field Productions On May 13 2020 Dave Ashley added the source code of the game to his Game Boy Color development repository 479 Blood II The Chosen 1998 1999 FPS Proprietary Proprietary Monolith Productions In 1999 SDK released the game logic for modders 480 The LithTech engine was not included as source code Blue Max 1983 2016 Scrolling shooter Proprietary Proprietary Bob Pollin Assembly source code released in 2016 by the author Bob Pollin in the Atariage forum 481 On the Atariage forum source code of many more games was released 482 483 484 Breakout 2000 1996 2008 Action Proprietary Proprietary MP Games Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Broken Sword The Shadow of the Templars and II The Smoking Mirror 1996 1997 2003 Point and click adventure Proprietary Proprietary Revolution Software The source code of the games was made available to ScummVM in 2003 485 Call to Power II 2000 2003 turn based strategy game Non commercial own license 486 Proprietary Activision Civilization clone Source opened to the apolyton community to allow support with Community patches 487 Checkered Flag 1994 2008 Racing Proprietary Proprietary Rebellion Developments Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Civilization IV 2005 2006 partly turn based strategy Proprietary Proprietary Firaxis Games 2K Games In April 2006 the developers released the source code of the core game mechanic to the public with a Software Development Kit 488 489 Additionally to the released source code as game data and rules are stored in XML files and most of the game is written in Python much but not all of the game is open and easily customizable 490 The game s community produced later many mods total conversions and optimization patches for the game 491 Civilization V 2010 2012 partly turn based strategy Proprietary Proprietary Firaxis Games 2K Games In Fall 2012 the developers released the source code of the core game DLL 492 The game s community produced later a community patch project 493 494 Club Drive 1994 2008 Racing Proprietary Proprietary Atari Corporation Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Contract J A C K 2003 2003 FPS Proprietary Proprietary Monolith Productions Game code distributed with the official editor www mpgh net citation needed Conquest Frontier Wars 2001 2013 Space Real time strategy Proprietary Proprietary Fever Pitch Studios On December 9 2013 the source code was bundled with every copy of the game purchased on GOG com 495 496 Cook Serve Delicious 2012 2016 Business simulation game Proprietary Proprietary Vertigo Gaming Source code released in the Humble GameMaker Bundle on September 6 2016 497 498 499 Crazee Rider 1987 2019 Racing Proprietary Proprietary Superior Software In November 2018 the source code of Crazee Rider in BBC Micro 6502 assembly language was released by Kevin Edwards designer of the game 500 In April of the following year the source code for the Acorn Electron version was also released 501 CryEngine 5 2002 502 2016 FPS NA Crytek In 2016 Crytek released their engine as pay what you want including the source code to the public 503 504 Crysis 2007 FPS Proprietary Proprietary Crytek Game code was officially released with the SDK citation needed Crysis 2 2011 FPS Proprietary Proprietary Crytek Game code was officially released with the SDK Cybermorph 1993 2008 Shooter Proprietary Proprietary Attention to Detail Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Daikatana 2000 2015 FPS Proprietary Ion Storm John Romero Lacking any further official support after the closure of Ion Storm s Dallas office in 2001 John Romero gave the game s source code to community members allowing them to develop additional platform ports and bug fixes 505 506 DarkSpace 2001 2009 MMO Real time strategy multiple self written licenses 507 Proprietary Palestar DarkSpace s game engine called Medusa released by Palestar under multiple licenses 508 Death and Taxes 2020 2020 Simulation game Proprietary MIT engine 509 game code Proprietary Placeholder Gameworks After selling well the indie game s Unity source code was released on GitHub 510 to help other developers 511 512 Death Ray Manta 2012 2015 Arena shooter Proprietary educational purposes Bagfull of Wrong Rob Fearon The GameMaker Studio based game s source code was released in 2015 with a Humble Indie Bundle 513 The assets followed in 2016 514 Descent Descent II 1995 1996 1997 1999 space 3D FPS own license 515 Proprietary Parallax Software Game source released by Parallax Software in 1997 Descent 1 516 and 1999 Descent 2 517 Descent 3 source code seems to be in hands of Rebecca Heineman and were considered 2014 for a release 518 Deus Ex video game 2000 FPS Proprietary Proprietary Ion Storm Headers and some code distributed with the official SDK citation needed Discworld and Discworld II 1995 2008 point and click adventure game Proprietary Proprietary Teeny Weeny Games First announced for release around 2005 by Terry Pratchett 519 source code became in 2008 available to the ScummVM developers 520 The code was fast integrated into ScummVM 521 Disney s Aladdin 1993 2017 Platformer Proprietary Proprietary Disney Around 2017 the source code of the game became available to The Video game history foundation which wrote a review of the technique of the game based on the code 522 Dog Daze 1981 2014 Arcade game Proprietary Proprietary Gray Chang In 2014 Gray Chang released the source code of his Atari 400 800 games Dog Daze Dog Daze Deluxe Bumpomov s Dogs and Claim Jumper 523 Available at the Internet Archive Doom Jaguar 1994 2003 FPS Proprietary Proprietary Id Software On April 27 2003 the source code of the Atari Jaguar port of the game was released by Albert Yarusso of AtariAge with permission of John Carmack 524 Duke Nukem 3D 1996 2003 FPS Build license GPLv2 engine 525 game code Proprietary 3D Realms Ken Silverman Game source released on April 1 2003 526 Update builds and source ports like eduke32 followed by the game s community 527 Dungeon Defenders 2010 2011 Tower defense Proprietary Proprietary Trendy Entertainment In November 2011 there was a development kit released as free DLC which included the game s source code 528 Elite 1984 1999 Space trading game Proprietary Freeware Ian Bell David Braben In November 1999 developer Ian Bell released on the game s 15th birthday the BBC Micro assembly source code on his website 529 530 Following that Christian Pinder created a platform neutral citation needed C version from the released BBC Micro version called Elite The New Kind E TNK sources were removed in 2003 on David Braben request 531 532 In 1999 2000 a dispute occurred between Ian Bell and David Braben regarding Bell s decision to make available all versions of the original Elite 533 The dispute has since ended and the various versions are now available again on Bell s site 534 535 Enemy Engaged RAH 66 Comanche vs KA 52 Hokum 2000 2003 Helicopter Flight simulator own license 536 Proprietary Razorworks Game source was released somewhen 2003 by Razorworks 537 Even the Ocean 2016 2023 action adventure Proprietary Proprietary Analgesic Productions The entire source code for the game was uploaded under proprietary terms on GitHub on September 23 2023 538 Faery Tale Adventure II Halls of the Dead 1997 2021 Point and click adventure Proprietary Proprietary The Dreamers Guild The Wyrmkeep Entertainment provided the original source code to the ScummVM team in May 2021 539 Far Cry video game 2004 FPS Proprietary Proprietary Crytek Game code was officially released with the SDK citation needed F E A R 2005 FPS Proprietary Proprietary Monolith Productions Headers and some code distributed with the official SDK citation needed The Feeble Files 1997 2005 Adventure Proprietary Proprietary Adventure Soft The source code of the games was made available to ScummVM in 2005 540 Fight for Life 1996 2008 Fighting Proprietary Proprietary Atari Corporation Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Flight of the Amazon Queen 1995 2003 Adventure Proprietary Proprietary Interactive Binary Illusions The source code of the games was made available to ScummVM in 2004 540 Freedom Force 2002 2002 partly FPS Proprietary Proprietary Irrational Games Game logic written in Python Scripts are located in the game directory citation needed FreeSpace 2 now FreeSpace 2 Source Code Project 1999 2002 Space Sim Non commercial Proprietary Proprietary Volition Game source released by Volition on April 25 2002 541 Galaforce 1986 2019 Shoot em up Proprietary Proprietary Superior Software In March 2019 the source code of Galaforce in BBC Micro 6502 assembly language was released by Kevin Edwards designer of the game 542 In April of the same year Edwards released the source code for the Acorn Electron version 543 Gothic 3 2006 2007 RPG Proprietary Proprietary JoWood Source code was opened by JoWood for the members of Community patch project from the game community in 2007 544 Grand Monster Slam 1989 2017 Fantasy sports game Proprietary Rolf Lakaemper Hartwig Niedergassel In March 2017 the source code of the game became available via the Internet Archive 545 Hack n Slash 2014 2014 Zelda like puzzle game Proprietary Double Fine With the 1 0 release on September 9 2014 the source code of the game was also released by Double Fine 546 547 Hacker Evolution Source code 2007 2015 Hacker game Proprietary Exosyphen Released on May 11 2015 for 49 95 by the indie game developer 548 Heartlight 1990 2005 Action adventure X LanD Computer Games Janusz Pelc The 8 bit Atari source code became available around 2005 549 Other games like Robbo became available too Heavy Metal F A K K 2 2000 2001 Action adventure Proprietary Proprietary Ritual Entertainment Game code distributed with the official editing tools SDK citation needed Heretic II 1998 1998 Action adventure Proprietary Proprietary Raven Software Game code distributed with the official editing tools citation needed Highlander The Last of the MacLeods 1995 2008 Action adventure Proprietary Proprietary Lore Design Limited Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Homeworld 1999 2003 Space Real time strategy Non commercial license 550 Proprietary Relic Entertainment Game source released 2003 551 The source code became the base of several source ports to alternative platforms like Mac 552 Linux Pandora 553 Maemo N900 554 or Android 555 556 using the Simple DirectMedia Layer SDL cross platform multimedia library As the source code s license requirements limits further development significantly 557 the game s community aims for a re licensing with the new IP holder Gearbox 558 In September 2013 Gearbox responded positively to the idea for a re licensing of the already published source code noting their efforts in supporting the modding community 559 Hover Strike 1995 2017 Shooter Proprietary Proprietary Atari Corporation Made freely available on a Jaguar dedicated Facebook group in May 2017 560 Hover Strike Unconquered Lands 1995 2008 Shooter Proprietary Proprietary Atari Corporation Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Hundreds 2010 2010 Puzzle game Greg Wohlwend Semi Secret Greg Wohlwend chose to open source his code in 2010 561 partly with the intent to spur non coders to try coding as he had 562 563 Programmer Eric Johnson of Semi Secret found the open source version and ported the game to iPad in a weekend before notifying Wohlwend 562 which was later released commercially in an updated version I War Atari Jaguar game 1995 2008 Shooter Proprietary Proprietary Imagitec Design Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Inherit the Earth 1994 2005 Point and click adventure Proprietary Proprietary The Dreamers Guild In 2005 Wyrmkeep Entertainment gave the source code for the game to the ScummVM Team for its inclusion in ScummVM 564 565 Jim Power in Mutant Planet 1992 2017 Platform game Digital Concept Around 2017 the source code of Jim Power was rescued by Piko Interactive 566 Ken s Labyrinth 1993 2001 FPS Non commercial license Freeware Ken Silverman Ken s Labyrinth was released as freeware on November 16 1999 The source code under a non commercial license followed on July 1 2001 567 A port to modern operating systems such as Windows and Linux using Simple DirectMedia Layer called LAB3D SDL was created by Jan Lonnberg and released in 2002 568 A version of the port which includes new higher resolution textures was also created by Jared Stafford 569 Kingpin Life of Crime 1999 FPS Proprietary Proprietary Xatrix Entertainment Game code distributed with the official SDK citation needed The Labyrinth of Time 1993 2016 Adventure Proprietary Proprietary Terra Nova Development The source code of the games was made available to ScummVM in 2016 570 565 Larva Mortus 2008 2009 Top down shooter MIT Non commercial engine game code 571 Proprietary Rake in Grass Czech independent video game developer Pavel Tovarys released the Torque 2D v1 1 3 based source code in 2009 under non commercial conditions 572 573 Several other games source code were released too 574 The code was taken offline after several games IP were sold to another company The source code is currently in no known repository on the web available The Little Mermaid II Pinball Frenzy 2000 2020 Pinball Proprietary Proprietary Left Field Productions On May 11 2020 Dave Ashley released the source code of the game on GitHub along with a Game Boy Color emulator 575 The Lost Files of Sherlock Holmes The Case of the Serrated Scalpel and The Case of the Rose Tattoo 1992 2015 Adventure Proprietary Proprietary Mythos Software On 2015 Electronic Arts gave source code for both games to the ScummVM Team for their inclusion in ScummVM 576 MechCommander 2 2001 2006 Real time tactics Shared Source Limited Permissive License 577 Proprietary FASA Interactive Microsoft Source opened under a Shared Source license by Microsoft in August 2006 578 579 As of 2017 there is a project fork on GitHub with the goal to port the source code to Linux 580 Miner Wars 2081 2012 2013 6DOF Space Shooter game own proprietary license 581 Proprietary Keen Software House 6DOF action survival space shooter simulation game set in the year 2081 Full game and engine source code released under a restrictive license MiG Alley 1999 2001 Flight simulation Proprietary Proprietary Rowan Software Empire Interactive Source opened by Rowan Software Empire Interactive in 2001 582 583 Escape from Monster Manor 1993 2022 FPS Proprietary Proprietary Studio 3DO On August 8 2022 Leo Schwab programmer of the game uploaded the entire source code for the game on GitHub 584 Mr Do for Game Boy 1992 2007 Arcade Proprietary Proprietary Universal Entertainment Corporation Game Boy version open sourced by developer Wesley Knackers in 2007 on his website 585 586 Myth series 1998 2001 Real time tactics Proprietary Proprietary Take 2 Interactive MumboJumbo Source opened by Take 2 Interactive MumboJumbo to the game community in 2001 587 588 Nanosaur 1998 2003 FPS Proprietary Proprietary Pangea Software Around 2003 the Nanosaur source code was made available by the developer under a restrictive license 589 Nemesis the Warlock 1987 2019 Action game Proprietary Proprietary Creative Reality On May 19 2019 Michael J Archer uploaded the source code for the Commodore 64 version of the game to GitHub 454 Nightlong Union City Conspiracy 1998 2021 Adventure Proprietary Proprietary Trecision On May 29 2021 the ScummVM Team received the source code for the in house game engine created by Trecision and used for games like Nightlong Union City Conspiracy Ark of Time and Alien Virus 590 Pariah 2005 2005 partly FPS Proprietary Proprietary Digital Extremes Game code available on GitHub 591 Pirate Adventure 1978 1980 adventure game Scott Adams game designer The source code for Pirate Adventure was printed in the December 1980 issue of BYTE with an addendum in April 1981 592 593 This enabled others to discover how the engine worked and to create their own adventures using this or a similar design Postal 2 2003 2003 partly FPS Proprietary Proprietary Running with Scissors Some game code and tools distributed with the official game release citation needed Preppie 1982 2016 action game Russ Wetmore Star Systems Software In January 2016 Russ Wetmore released the source code of his Atari 8 bit family games Preppie and Preppie II to the public on the Internet Archive 438 Prince of Persia 1989 2012 Cinematic platformer Proprietary Proprietary Jordan Mechner Apple II source code was long thought lost 594 but was found again and released in 2012 595 A port of the assembly source code to C and SDL as backend was made by a community programmer 596 Rampage 1988 2019 Action game Proprietary Proprietary Software Studios Catalyst Coders On May 19 2019 Michael J Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub 454 Rowan s Battle of Britain 2000 2001 Flight simulation Empire Interactive License Proprietary Rowan Software Empire Interactive Source opened by Rowan Software Empire Interactive in 2001 582 597 Rune 1999 2000 FPS Proprietary Proprietary Human Head Studios Headers and some code distributed with the official SDK citation needed Savant Ascent 2013 2015 Action Proprietary Proprietary D Pad Studio Source code released in the Humble Weekly Bundle Play and Create with GameMaker on September 17 2015 598 599 Sea Dogs An Epic Adventure at Sea 2000 2009 pirate game Proprietary Proprietary Akella In 2009 Akella agreed to hand the source code of Sea Dogs game engine to the game community on end of support 600 Severance Blade of Darkness 2001 2001 partly FPS Proprietary Proprietary Rebel Act Studios Game logic written in Python Scripts are located in the game directory citation needed Shadowgun Deadzone 2011 2015 Shoot em up SHADOWGUN DEADZONE PUBLIC LICENSE AGREEMENT 601 Proprietary Madfinger Games Game source and assets of the Unity 3 5 game were released some years after release 602 Shadowgrounds 2005 2011 Shoot em up own non commercial license 603 Proprietary Frozenbyte Game source released with a Humble Indie Bundle by Frozenbyte on April 22 2011 604 Shadow Warrior 1997 2005 FPS Build license GPLv2 engine 525 game code Proprietary 3D Realms Game source released on April 1 2005 605 Silent Hunter II 2001 2002 submarine simulation Proprietary Ubisoft Around 2002 Ubisoft had ended the official support while still significant issues existed Therefore Ubisoft enabled the game s community at Subsim com to fix the game themselves by giving them the source code 606 The fans raised 7000 for an unofficial patch development project which fixed most of the issues 606 The community extended Silent Hunter II also content wise significantly with expansion packs or texture upgrades 607 608 Sin amp SiN Wages of Sin 1998 1998 FPS Proprietary Proprietary Ritual Entertainment Game code was officially released citation needed Slaine 1987 2019 Adventure Proprietary Proprietary Creative Reality On May 19 2019 Michael J Archer uploaded the source code for the Commodore 64 version of the game to GitHub 454 Soliter 1994 2009 609 Puzzle game Proprietary Freeware Oldsoft Zdnek Stary developed at the Czech development studio Oldsoft the solitair game Soliter for the ZX Spectrum which got released in 1994 The game was released by the author in 2005 on his homepage for download in 2009 the assembly source code followed as scan 609 Soldier of Fortune 2000 FPS Proprietary Proprietary Raven Software Game code distributed with the official SDK citation needed Soldier of Fortune II Double Helix 2002 FPS Proprietary Proprietary Raven Software Game code distributed with the official SDK citation needed Solstice 2016 2016 Visual novel Proprietary Proprietary MoaCube Source code released in the Humble GameMaker Bundle on September 6 2016 497 498 499 Space Engineers 2013 2015 space sandbox game Proprietary Proprietary Keen Software House On May 14 2015 the development studio made the source code freely available to the game s community for easier modding on GitHub under a proprietary license non open source license 610 611 612 Star Fire 1980 2020 Arcade Proprietary Proprietary Exidy On August 21 2020 The History of How We Play uploaded to the Internet Archive the source code for Star Fire provided by David Rolfe co designer of the game 613 Star Raiders 1979 2015 space combat simulator Proprietary Proprietary Aric Wilmunder Atari The commented assembly source code scan of Star Raider became available in October 2015 in the Internet Archive as scan 614 Aric Wilmunder opened it up with several other artifacts of his gaming career e g SCUMM 615 The community typed in the source code double checked in a GitHub project 616 Shortly before a reverse engineering project was finished too 617 A true sequel also called Star Raiders II had been under development for some time by Aric Wilmunder The never released prototype source code was posted publicly in December 2015 618 Star Trek Voyager Elite Force 2000 2000 FPS Proprietary Proprietary Raven Software Game code distributed with the official GDK citation needed Holomatch multiplayer independently ported to ioquake3 Star Trek Elite Force II 2002 2003 FPS Proprietary Proprietary Ritual Entertainment In November 2003 Ritual Entertainment released the source code of their server side code base for multiplayer gaming under a non commercial license 619 620 Stealth Bastard Deluxe 2012 2015 Stealth Proprietary Proprietary Curve Digital Source code released in the Humble Weekly Bundle Play and Create with GameMaker on September 17 2015 598 599 Taxman 1981 202 pacman clone H A L Labs Brian Fitzgerald Apple II pacman clone from 1981 In August 2015 Rebecca Heineman announced that original developer Brian Fitzgerald allowed to release the source code 621 622 GitHub repository is still empty as of July 2020 623 Tempest 2000 Atari Jaguar 1994 2008 Tube shooter Proprietary Llamasoft Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Terminal Velocity 1995 2015 flight game Mark Randel Terminal Reality Became available under a NDA in June 2015 624 Work on an updated version for modern system started immediately 625 The Clue 1994 2000 role playing adventure game own license own license Freeware Neo Software In 2000 the source code was released to the public 626 627 The game is since then ported to modern platforms via SDL and receives still updates by the community 2015 628 The Guild of Thieves 1987 2017 adventure game Magnetic Scrolls In June 2017 Magnetic Scrolls worked on recovering the source code of their classics from tapes to remaster and re release them 629 630 The Wizard s Castle 1980 2004 role playing adventure game Joseph R Power The BASIC source code of the 1980 developed game was published by the developer in the July August 1980 issue of Recreational Computing 631 Ports to other systems followed afterwards 632 The Wheel of Time 1999 1999 FPS Proprietary Proprietary Legend Entertainment Game code and tools distributed with the official game release citation needed Tilt Brush 2016 2021 Room scale Proprietary Apache 2 0 engine 509 game code Proprietary Google The Unity 2018 4 11f1 source code was uploaded to GitHub on January 26 2021 633 Tony Tough and the Night of Roasted Moths 2002 2012 Point and click adventure Proprietary Proprietary Nayma Software In 2012 DotEmu and Nayma Software gave the source code for this game to the ScummVM Team for its inclusion in ScummVM 634 565 Tornado 1993 2017 combat flight simulator Proprietary Digital Integration Interplay Entertainment In March 2016 in the Tornado s community forum rumors surfaced that Interplay Entertainment was working on a re release of the game for digital distribution based on the original source code 635 The assembly source code finally surfaced in January 2017 on github com 636 637 Trevor McFur in the Crescent Galaxy 1993 2008 Shoot em up Proprietary Flare II Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24 2008 458 459 Source code was provided by Atari historian Curt Vendel 460 Tron 2 0 2003 2009 FPS Monolith Productions Source code released with Lithtech Jupiter Enterprise b69 engine Ultima Escape from Mt Drash 1983 2003 Role playing video game Proprietary Proprietary Keith Zabalaoui Sierra On Line On 11 June 2003 the game was ported to PC under GPLv2 license by Kasper Fauerby based on the original BASIC source code and some smaller binary reverse engineered parts 638 Unreal 1998 2008 FPS source opened to the community under NDA Proprietary Epic MegaGames Headers and some code distributed with the official SDK citation needed Also some pre release version v0 87 is available on the internet citation needed Around 2008 access to source code was granted by Epic MegaGames to the OldUnreal game community 639 In 2015 Tim Sweeney announced that he hope to be able to open source one day the engine to the public 640 Unreal Tournament 99 1999 2019 FPS source opened to the community under NDA Proprietary Epic Games Digital Extremes Legend Entertainment Headers and some code distributed with the official SDK citation needed Around 2019 access to source code was granted by Epic MegaGames to the OldUnreal game community 641 Unreal Tournament 2003 2002 FPS Proprietary Proprietary Epic Games Game code was officially released citation needed Unreal Tournament 2004 2004 FPS Proprietary Proprietary Epic Games Game code was officially released citation needed Unreal Tournament 3 2007 FPS Proprietary Proprietary Epic Games Game code was officially released citation needed Uplink 2001 2003 Hacking simulation Proprietary Proprietary Introversion Software Mid 2003 Introversion Software started selling the source code for 45 Usage beside modding and fixing of the game are not permitted by the license 642 Source code of the games Darwinia Multiwinia and DEFCON was later sold too 643 Unreal II The Awakening 2003 FPS Proprietary Proprietary Legend Entertainment Game code and tools distributed with the official game release citation needed Video Checkers 1980 2020 Board Proprietary Proprietary Atari Inc On April 8 2020 Kay Savetz uploaded scans of the complete source code of the revision A of Video Checkers a first party video game for the Atari 2600 to the Internet Archive donated by its developer Carol Shaw 644 VVVVVV 2010 2020 platformer source available Proprietary Terry Cavanagh On the 10th anniversary of the game s release in January 2020 Kavanagh released the source code 645 for VVVVVV under a non open source VVVVVV Source Code License v1 0 646 via GitHub 647 Warlords Battlecry III 2004 2006 RTS Own proprietary license Proprietary Infinite Interactive Enlight Software On 24 May 2006 the Warlords Battlecry III source code became available to the public Members of the community who signed a NDA have been entitled distributors which have the legal permissions to allocate copies of the Warlords Battlecry III source code 648 649 The source code release resulted in the development of several community made fan patches 650 651 and mods War Worlds 2013 2014 RTS Own permissive license 652 Own permissive license Codeka Dean Harding The mobile strategy game was originally released commercially 653 and later released to the public to allow the community to continue the support of the game 654 655 With help of the community the game s main developer has continued the support since then Witchaven series 1995 2006 FPS non given Proprietary Capstone Software Around 2006 Les Bird a programmer from the 1996 folded game development company Capstone Software released the source code of the games Witchaven Witchaven II William Shatner s TekWar and Corridor 7 Alien Invasion 656 Worms Armageddon 1999 2002 Deathmatch game Commercial Team17 Around 2002 Team17 impressed by the reverse engineering on Worms Armageddon for Silkworm 657 gave David Deadcode Ellsworth access to the source code 658 Over the next years he created unofficial patches until he joined Team17 in 2006 Updates are still created as of 2015 659 Xenonauts 2014 2015 Turn based tactics Proprietary Goldhawk Interactive Shortly after the release of the stable version Goldhawk Interactive allowed selected members of the community to access the source code 660 This resulted in the community edition of the game Xenonauts Community Edition X CE which continues development of an independent branch of the game adding new features and bugfixes 661 XIII 2003 2018 partly FPS Proprietary Proprietary Ubisoft Paris The UnrealScript source code of the game was made available on GitHub in January 2018 662 See also edit nbsp Free and open source software portal nbsp Video games portal Category Commercial video games with freely available source code List of open source game engines List of commercial video games with available source code List of open source video games List of formerly proprietary software List of commercial video games released as freeware List of freeware games List of proprietary source available software Source port Source available softwareReferences edit Samuelson Pamela Scotchmer Suzanne May 2002 The Law and Economics of Reverse Engineering PDF Yale Law Journal 111 7 1608 doi 10 2307 797533 JSTOR 797533 a b Maier Henrike October 2015 Games as Cultural Heritage Copyright Challenges for Preserving Orphan Video Games in the EU Jipitec 6 2 126 urn nbn de 0009 29 42732 Retrieved October 30 2021 a b c Saltsman Adam December 6 2011 Canabalt Open Sourcing Your Game While It s Still Popular Semi Secret Software Archived from the original on March 27 2013 Retrieved August 9 2013 John Carmack on DOOM Classic Development Fan Questions Bethesda Blog ZeniMax Media 5 November 2009 Archived from the original on 23 September 2014 Retrieved 17 July 2022 Dunne Alex June 1999 A Business Case for Publishing Source Code PDF Game Developer Miller Freeman Inc p 4 Retrieved 2022 06 28 Cavanagh Terry 10 January 2021 Featured VVVVVV Levels 10th anniversary jam roundup distractionware Archived from the original on 20 February 2022 Retrieved 17 July 2022 Rosen David 23 December 2010 Revenge of the Titan s will release its source code at 1 75M Wolfire Games Archived from the original on 21 June 2022 Retrieved 17 July 2022 Rosen Jeffrey 3 February 2011 Counterfeit Lugaru on Apple s App Store developing Wolfire Games Archived from the original on 16 May 2022 Retrieved 17 July 2022 Purchasing Abuse Archived from the original on 2003 06 10 Retrieved 2007 09 07 Abuse 1996 20th anniversary source port Archived 2016 07 21 at the Wayback Machine on gog com Abuse SDL 0 9a Enabled custom resolutions and enabled lights on high resolutions Re enabled OpenGL rendering to enable vsync Added cheats via chat console bullettime god giveall flypower sneakypower fastpower healthpower nopower XBox360 controller support with rebindable buttons Abuse 1996 Archived 2016 06 13 at the Wayback Machine on github com antrad Herro Mark October 1980 The Electric Eye PDF The Dragon 42 42 43 hardcopy aka electronic pagenumbers 44 45 in archived PDF version Archived PDF from the original on 2015 07 14 Retrieved 2015 07 11 Adams Scott July 1980 Adventureland SoftSide p 36 Archived from the original on 28 March 2016 Retrieved 13 April 2015 Graham Nelson 2001 The Inform Designer s Manual PDF Dan Sanderson p 358 ISBN 0 9713119 0 0 Archived PDF from the original on 2015 11 07 AlienBash src readme Archived 2016 03 04 at the Wayback Machine This code is available under the following license as stated by Mr Glen Cumming in the above thread I am happy for every scrap of code on my disks to be made available to whoever wants it I only ask that the really embarrassing stuff is erased lots and any potentially libelous messages or swears in any of the code scrolling messages are removed AlienBash I amp II Original Coder Contacted Help Needed in Rescuing 68000 Source Archived 2016 03 06 at the Wayback Machine on eab abime net 2014 Savetz Kay KaySavetz March 30 2021 Need some new old 6502 assembly language code Ed Fries graciously sent me the code for 5 of his Atari 8 bit games and released them under an open source license 3 were published by Romox 1 was unfinished unpublished and 1 was finished ish but unpublished Tweet Archived from the original on 13 April 2021 Retrieved 27 May 2021 via Twitter Kurinnoy Michael 2007 02 20 AstroMenace Press Release PDF Viewizard Archived from the original PDF on 2011 07 17 Retrieved 2010 03 08 Memonix game Source on viewizard com 2007 10 12 a b c d Siegler Joe 20 March 2009 Several old games released as Freeware 3D Realms Archived from the original on 23 March 2009 Retrieved 1 May 2020 Frigaard Andy 20 June 2021 Bird Strike Q amp A Thread post 4 stardot org uk Archived from the original on 21 June 2021 Retrieved 21 June 2021 After a few enjoyable weeks of working through all the original uncommented code I have posted the source to Github Blades of Exile Source Code Archived 2014 09 05 at the Wayback Machine on spiderwebsoftware com Source Code The complete source code of the following Clonk versions is available Clonk Rage current version engine tools and editor VC6 VC7 VC9 MinGW gcc xcode Clonk Endeavour 4 95 5 engine only VC6 or MinGW Clonk Planet 4 65 engine only VC6 Clonk 3 Radikal MS DOS Borland Turbo C Clonk 2 Debakel MS DOS Borland Turbo C Clonk 1 MS DOS Borland Turbo C Clonk Source Code License ISC License Copyright c 2001 2014 RedWolf Design GmbH Archived 2006 01 14 at the Wayback Machine Developer Clonk Game Content License Clonk game content is available under the following license This applies to graphics audio data scripting and text found in the game release packages usually packed inside c4f c4g and c4d group files Creative Commons Attribution NonCommercial CC BY NC in Polish Announcement on Polish fan community page Archived 2012 08 07 at the Wayback Machine a b Jerz Dennis 2007 Somewhere Nearby is Colossal Cave Examining Will Crowther s Original Adventure in Code and in Kentucky Digital Humanities Quarterly 001 2 Seton Hill University Archived from the original on 2016 06 16 David Kinder s guide to Adventure downloads Archived 2014 08 12 at the Wayback Machine at the Interactive Fiction Archive Colossal Cave Adventure Source Code Archived 2015 06 06 at the Wayback Machine on jerz setonhill edu 2007 adv350 pdp10 tar gz Archived 2016 06 23 at the Wayback Machine on ifarchive org 2000 Colossal Cave Adventure is due for an update Archived 2017 05 29 at the Wayback Machine by Jordan Pearson on vice com May 29 2017 open adventure Archived 2017 05 30 at the Wayback Machine on GitLab The Adventure begins again Archived 2017 05 31 at the Wayback Machine by Eric Raymond 2017 05 22 cylindrix on hardgeus com archived Cylindrix Archived 2016 07 21 at the Wayback Machine on github com Citadel for Amiga 1995 MobyRank MobyGames Archived from the original on 2020 03 04 Retrieved 2020 03 04 the citadel source code Archived 2016 07 21 at the Wayback Machine October 2007 Cytadela need help in porting to AmigaOS Archived 2016 07 21 at the Wayback Machine on amigaworld net 31 Jan 2007 Cytadela project a conversion of an Amiga first person shooter Archived 2016 06 23 at the Wayback Machine on cytadela sourceforge net Savetz Kevin KevinSavetz March 9 2018 I recovered the source code of Dandy from floppy disk and posted it with the creator s permission Tweet Archived from the original on 29 February 2020 Retrieved 29 February 2020 via Twitter The original Atari 8 bit version being added to GitHub Dragonfire source Archived 2013 03 16 at the Wayback Machine on atariage com Dragonfire Source Code Archived 2016 03 07 at the Wayback Machine at atariage com Really it was Bob that wanted his source in the public domain 2003 stella Source code for Dragonfire from Bob Smith Archived 2016 07 21 at the Wayback Machine on biglist com minidig Archived 2016 11 12 at the Wayback Machine on qotile net Bolding Jonathan January 25 2020 Duelyst to shut down servers forever PC Gamer Retrieved January 25 2020 Chalk Andy 10 January 2023 Duelyst source code is now free for everyone no strings attached PC Gamer Future plc Archived from the original on 2023 01 10 Retrieved 10 January 2023 Eat The Whistle goes GPL on hurricane studios ath cx archived Eat The Whistle Archived 2021 03 30 at the Wayback Machine on sourceforge net Eat the Whistle Archived 2013 09 02 at the Wayback Machine on ggsoft org Escape Towards The Unknown goes GPL on hurricane studios ath cx archived Escape Towards The Unknown Archived 2020 07 21 at the Wayback Machine Escape Towards The Unknown GPL Archived 2015 09 10 at the Wayback Machine on sourceforge net Fish Fillets Next Generation glad archived openglad Archived 2016 03 19 at the Wayback Machine on sourceforge net tinyspeck 2013 11 18 Glitch is Dead Long Live Glitch Art amp Code from the Game Released into Public Domain glitchthegame com Archived from the original on 2013 12 13 Retrieved 2013 12 11 The entire library of art assets from the game has been made freely available dedicated to the public domain Code from the game client is included to help developers work with the assets All of it can be downloaded and used by anyone for any purpose Blackwell Laura 2013 11 18 Afterlife of an MMO Glitch s offbeat art enters public domain pcworld com Archived from the original on 2013 12 09 Retrieved 2013 12 11 Kloodge 27 March 2020 Source Code Released Steam Community Valve Archived from the original on 30 March 2020 Retrieved 30 March 2020 Andersson Jens Kronqvist Jan 2008 09 21 The Gravity Force 2 Homepage lysator liu se Archived from the original on 2013 10 15 Retrieved 2013 10 13 Jan made an archaeological expedition and recovered the GF2 source code from a dusty old floppy disc We do not pretend it is a wonder in coding style in fact it is a complete disaster but for primarily nostalgic interest we publish it here gf2 Archived 2013 10 15 at the Wayback Machine on lysator liu se The screenshots the GF2 source code and the actual Amiga game v1 10 v1 20 are released for use under the CreativeCommons CC BY SA license April 26 2017 Bringing Habitat Back to Life pastemagazine com 3 February 2016 Archived from the original on 2016 03 02 Retrieved 2016 02 22 The Habitat Hackathon The Museum of Art and Digital Entertainment Archived from the original on 21 July 2016 Retrieved 6 June 2016 Francis Bryant 2016 07 06 Source code for Lucasfilm Games 80s MMO Habitat released Gamasutra Archived from the original on 2016 07 08 Retrieved 2016 07 06 Lucasfilm Games MMO Habitat source code released Archived 2016 07 21 at the Wayback Machine by Brittany Vincent on Engadget com 2016 07 07 Halloween The New Nightmare IGN Halloween The New Nightmare Jadeware Halloween The New Nightmare GitHub insideastarfilledsky net Archived 2013 07 08 at the Wayback Machine gameSource Archived 2016 07 21 at the Wayback Machine on sourceforge net Inside a Star Filled Sky Public Domain For Pay Video Review Jason Rohrer on open source Archived 2015 09 05 at the Wayback Machine on freegamer blogspot de March 2011 GameKaiserZwo on strotmann de 2003 Kaiser II unter GNU Public License on abbuc de 03 April 2003 David H Ahl April 1982 Six Business Management Games jpg Creative Computing Vol 8 no 4 pp 28 30 Archived from the original on 2016 09 16 lemonade source zip Archived 2016 03 07 at the Wayback Machine on strout net Lemonade Stand Archived 2006 04 01 at the Wayback Machine on Codenautics Lemonade Stand is both free and open source Lugaru goes open source Archived 2011 02 02 at the Wayback Machine Wolfire Blog May 11 2010 Relicensing all Wolfire Lugaru assets to CC BY SA 3 0 on GitLab by David Rosen November 21 2016 osslugaru gitlab io Archived 2016 12 31 at the Wayback Machine Fully Open Source 3D Killer Rabbit Lugaru HD 1 1 on freegamer de January 2017 Maelstrom Changeset 8 0e3d2ddd9add Archived from the original on 2011 07 16 Retrieved 2010 05 18 megaball Archived 2016 06 16 at the Wayback Machine on snappymaria com June 12 2012 megaball Archived 2016 07 21 at the Wayback Machine on Bitbucket org No Gravity Classic Archived 2013 03 24 at the Wayback Machine on sourceforge net nothingtohide cc archived Nothing to hide license on github com Nothing To Hide Is A Very Smart Anti Stealth Game Archived 2017 06 07 at the Wayback Machine by John Walker on Rock Paper Shotgun on February 12 2014 Demo Crowdfunding anti stealth game Nothing To Hide takes its name literally Archived 2016 10 08 at the Wayback Machine by Anthony Swinnich on indiegames com February 16 2014 Attention game designers Public Domain Jam permanent dead link on creativecommons org by Matt Lee May 16 2014 pt2 archived paybacktime2 on github com Budge Bill BillB February 12 2013 I just pushed the source for Pinball Construction Set to GitHub thanks to Scott Cronce at EA Tweet Archived from the original on 11 August 2018 Retrieved 16 June 2016 via Twitter Budge Bill billbudge PCS Atari800 GitHub Archived from the original on July 25 2013 Retrieved February 13 2013 Budge Bill PCS AppleII GitHub Retrieved February 13 2013 Blupi games Planetblupi GitHub 14 May 2021 Planet Blupi blupi org blupi org 2018 06 02 Spacewar assembly source code Archived 2020 02 23 at the Wayback Machine on textfiles com RuneSword 2 FREE on crosscutgames com 2004 04 17 runesword 2 Archived 2015 09 06 at the Wayback Machine on sourceforge net Wiesner Thorsten 2004 04 19 Rollenspiel RuneSword 2 ist ab sofort Open Source Kompletter Source Code steht zum Download bereit in German golem de Archived from the original on 2015 09 24 Retrieved 2015 08 04 2 6 3 patch Archived 2017 06 12 at the Wayback Machine on sourceforge net 2011 Free Ryzom campaign archived Virtual Citizenship Association Virtual Worlds Real Citizens Virtualcitizenship org Archived from the original on 2007 10 29 Retrieved 2009 10 14 Breakthrough for Free Software Gaming Ryzom Announces Full Release of Source Code and Artwork and a Partnership with the Free Software Foundation to Host a Repository of the Game s Artistic Assets ryzom com Archived from the original on 2010 05 09 Retrieved 2010 05 06 Ryzom is opening a new website for its Free Software NeL 3D MMORPG engine Ryzom 2008 09 08 Archived from the original on 2009 02 17 Retrieved 2009 10 14 7kfans com p 96 Archived 2012 07 23 at the Wayback Machine enlight com 7k Archived 2009 10 28 at the Wayback Machine micropolis license Archived 2012 04 14 at the Wayback Machine on donhopkins com Simser Bil 2008 01 10 SimCity Source Code Released to the Wild Let the ports begin weblogs asp net bsimser Archived from the original on 2014 05 10 Retrieved 2012 12 30 Don Hopkins got a lot of work done on the finishing touches on releasing the original SimCity source code under the GNU General Public Library GPL The code won t have reference to any SimCity name as that has all be renamed to Micropolis Micropolis was the original working title of the game and since EA requires that the GPL open source version not use the same name as SimCity to protect their trademark a little work had to be done to the code sissyfight 2000 returns on kickstarter com post on kickstarter com sissyfight on github com Soldat 1 8 has been released as open source Steam Valve Corporation 25 May 2020 Retrieved 26 June 2020 Marcinkowski Michael 26 May 2020 Soldat source code released and a story of how it all started Gamasutra UBM Technology Group Archived from the original on 15 June 2020 Retrieved 26 June 2020 Soldat asset license on github com Clark Dave 2000 10 29 Sopwith Code Support Archived from the original on July 18 2012 Retrieved 2006 12 01 Clark Dave Sopwith Source Code Dave Clark s Home Page Archived from the original on 2012 02 06 Retrieved 2006 12 01 Duane Blehm s Source Code on macintoshgarden org Source Code for Duane Blehm s games Stunt Copter ZeroGravity Cairo Shootout released into the public domain by his parents after his passing Brouwer Shane 27 July 2012 Super Lemonade Factory releases source code Archived from the original on 21 July 2016 Retrieved 10 July 2016 Brouwer Shane initials games February 2 2021 Do you remember Super Lemonade Factory It s free now on itch io I ve also added back the cute run cycle gifs to the page It s been 10 years of bubbly fun it s time to open source the art and code Tweet Archived from the original on 1 October 2021 Retrieved 1 October 2021 via Twitter Brouwer Shane initials games February 4 2021 So do you remember the OUYA preservation effort I ve just dumped the source code for Super Lemonade Factory for OUYA and you re welcome to do whatever you want with it Tweet Archived from the original on 1 October 2021 Retrieved 1 October 2021 via Twitter Triplane Classic Archived 2015 12 24 at the Wayback Machine on sourceforge net Triplane Classic a side scrolling dogfighting game Archived 2016 07 21 at the Wayback Machine on github com Free game graphics Tyrian ships and tiles Archived 2012 12 28 at the Wayback Machine Daniel Cook 2007 04 04 Lost garden license Archived 2012 12 28 at the Wayback Machine Civil War Strategy Game 2 10 RELEASED on hutsellgames com The source code for the classic Civil War Strategy Game by W R Hutsell on github com davidshq civilwarstrategygame voxel quest Archived 2016 09 14 at the Wayback Machine on kickstarter com 2014 First Release Archived 2016 09 13 at the Wayback Machine on voxelquest com August 03 2016 vqisosmall on github com Wander 1974 a lost mainframe game is found Archived 2015 11 17 at the Wayback Machine on April 22 2015 Wander 1974 release and questions answered Archived 2015 11 17 at the Wayback Machine WaterRace Archived 2018 06 11 at the Wayback Machine on github com Warfare Incorporated has been open sourced Archived 2016 05 14 at the Wayback Machine on warfareincorporated com by Scott Lu 2014 hostile takeover Archived 2016 07 21 at the Wayback Machine on github com Warfare Incorporated now Open Source Hostile Takeover Archived 2016 05 09 at the Wayback Machine on pyra handheld com 2015 Updated GPL release readme Archived 2013 03 08 at the Wayback Machine by Jay Walker eidos 11 Jun 2008 Savetz Kay KaySavetz March 17 2021 Thanks to John Keoni Morris we have recovered the source code for the Commodore 64 version of Worms Electronic Arts 1983 The creator David S Maynard has released the code with a free software license I recovered the Atari version last week Tweet Archived from the original on 17 March 2021 Retrieved 21 March 2021 via Twitter The DUNGEON Zork I source Archived 2016 07 21 at the Wayback Machine on github com devshane zork dungeon 3 2A tar Z 05 Oct 1994 Archived 2016 06 23 at the Wayback Machine on the Interactive Fiction Archive Dungeon version 3 2A 1 Oct 94 contains all the rooms and puzzles of the original MIT Zork DEC FORTRAN source code by Robert M Supnik see dungn32b zip for a port to DOS itafroma zork mdl zork source code is a master class in game developer trolling Sweeney Tim The Official ZZT Home Page Epic Games Archived from the original on October 10 1999 Please don t ask for the source if I had it I d release it but I lost it in a crash a long time ago Siekierka Adrian cbrzeszczot January 28 2023 According to Tim Sweeney the original ZZT source code was lost in the early 90s If I had it I d release it but I lost it in a crash a long time ago But they were all of them deceived for another backup was made Tweet Archived from the original on 31 January 2023 Retrieved 31 January 2023 via Twitter allegiancelicense txt Archived 2014 11 07 at the Wayback Machine Microsoft Research Shared Source license agreement MSR SSLA Colayco Bob 2004 02 06 Microsoft pledges Allegiance to its fanbase gamespot com Archived from the original on 2013 12 10 Retrieved 2011 07 22 Horvitz Eric 2017 07 28 Allegiance Relicense Letter PDF Director Microsoft Research Retrieved 2017 07 28 AmuletsArmor Archived 2017 05 23 at the Wayback Machine on github com source code Archived 2017 02 11 at the Wayback Machine Yep legal issues are now resolved We re moving forward February 2013 Questions regarding codebase Archived 2017 02 11 at the Wayback Machine October 2016 AmuletsArmor on github com emrecelikten Ares Archived 2015 05 18 at the Wayback Machine on amrosiasw com Antares Archived 2013 07 24 at the Wayback Machine on arescentral org Munkki Juri 2016 10 30 Avara game originally released in 1996 for Mac OS GitHub Archived from the original on 2016 12 16 Retrieved 2016 10 30 sourceforge net projects raceintospace Archived 2013 06 11 at the Wayback Machine a b CopyrightInfo txt Petitte Omri 20 March 2014 Cart Life exits Steam goes open source PC Gamer Archived from the original on 22 March 2014 Retrieved 21 March 2014 www richardhofmeier com on archive is Die geheimen Projekte des Richard Hofmeier Archived 2016 07 21 at the Wayback Machine on indiegames ch May 2015 cartlife src Archived 2016 07 21 at the Wayback Machine on github com Corncob 3D and the Corncob Other Worlds Campaign on tidegear net Kevin Stokes has given his permission to do whatever we like with this 2016 01 03 Dink Smallwood Source License Archived 2015 01 06 at the Wayback Machine Dink Smallwood Source License Archived 2015 01 06 at the Wayback Machine Please keep in mind while I m sharing the source I am not sharing the media if you would like to use or distribute the Dink Smallwood artwork this requires express permission Files Dink Smallwood Source Code Archived from the original on 2015 01 06 Retrieved 2015 01 06 Find free sounds for FreeDink Archived 2016 07 21 at the Wayback Machine on gnu org Dink Smallwood HD 1 89 released made free on all platforms on codedojo com DinkSmallwoodHD on github com Brany Skeldalu aka The Gates of Skeldal is ready for testing Archived 2015 11 22 at the Wayback Machine on trisquel info skeldal Archived 2016 07 21 at the Wayback Machine on sourceforge net Brany Skeldalu Download English Patch Beta DJ OldGames oldgames sk Archived from the original on 1 February 2014 Retrieved 18 January 2014 a b Nutt Christian 12 February 2016 Get a window into classic Mac dev with Glider source code Gamasutra UBM Technology Group Archived from the original on 24 September 2016 Retrieved 17 August 2020 Classic Mac game dev John Calhoun has released the source code for four of his games Glider Glider Pro Glypha III and Pararena onto GitHub Calhoun John 2016 01 29 Sources for the Macintosh game Glider PRO written by John Calhoun and published by Casady amp Green Inc GitHub Archived from the original on 2016 03 21 Calhoun John 2016 01 31 Added legal section to read me softdorothy glider pro 49a35bb GitHub GitHub Archived from the original on 2016 07 21 Retrieved 2016 03 16 GloomAmiga on GitHub Source code of Gloom released in May 2017 LICENSE the license does not cover any other asset within the repository which is only present for historical and archiving purposes gunocide 2002 webarchive vsgarage deutsch software 2002 g2ex on sourceforge net contact on irrgheist com archived H Craft Championship Purchase In order to purchase H Craft Championship please visit our reseller Manifestogames com 2007 H Craft Championship Archived 2009 10 03 at the Wayback Machine CDnavigator ru H Craft Championship Archived 2015 08 30 at the Wayback Machine Freeware release announcement in Reddit H Craft Championship Archived 2014 08 25 at the Wayback Machine Irrgheist News February 25 2015 H Craft Championship H Craft Source Code Archived 2015 03 02 at the Wayback Machine on irrgheist com about on Mobrulesgames com content CC BY NC SA code BSD archived 2013 haunts Archived 2017 02 09 at the Wayback Machine on kickstarter com Troubled Haunts Kickstarter Goes Open Source Archived 2017 03 05 at the Wayback Machine on the Escapist haunts on github com MobRulesGames haunts on github com losinggeneration Hypercycles Archived 2017 03 28 at the Wayback Machine on freegamedev net hypercycles on github com Gravier Jean 2021 03 17 jevarg hypercycles retrieved 2021 03 18 After 15 years a cancelled Game Boy RPG finds life on PC Archived 2016 10 20 at the Wayback Machine on pcgamer com by Steven Messner August 16 2016 infinity Archived 2016 08 29 at the Wayback Machine on github com infinity gbc Infinity Released August 13 2016 Archived October 24 2016 at the Wayback Machine on affinix com Today we are pleased to announce the release of Infinity for Game Boy Color in unfinished form We ve made a ROM file available as well as the source code Cancelled Game Boy Color RPG Infinity Goes Live On Kickstarter Next Week Nintendo Life 2021 08 11 Retrieved 2021 08 26 Infinity GBC Infinity GBC Retrieved 2021 08 26 Latest Patches Archived 2015 08 01 at the Wayback Machine on ironseed com March 24 2013 wooga veroeffentlicht quellcode von html5 spiel magic land island Archived 2017 02 05 at the Wayback Machine on browsergame magazin de in German 2012 Pocket Island Archived 2016 10 26 at the Wayback Machine on github com Marathon 2 Source Code Released mactech com 2000 01 17 Archived from the original on 2014 08 20 Retrieved 2012 12 25 Today at 7 pm CST Bungie Software releases the Mac source code for their classic game Marathon 2 Durandal to the net Osborne Eric 23 June 2011 Burn Bright Burn Blue Bungie Archived from the original on 26 June 2011 Retrieved 19 October 2020 Kirmse Andrew Kirmse Chris 2012 09 15 License for Meridian 59 v1 0 GitHub Archived from the original on 2015 10 26 Retrieved 2013 10 08 This source code is distributed under the terms of the GNU General Public License with the following special exception As a special exception the copyright holders of this program give you permission to link this program with the accompanying files wrap dll and waveplay dll Pit Puzzle free distribution archived The Puzzle Pits Archived 2016 07 21 at the Wayback Machine on github com Running With Scissors RWSbleeter August 17 2015 We re going to release the POSTAL 1 source code soon but only if someone promises to port it to the Dreamcast Tweet Archived from the original on 14 April 2018 Retrieved 18 December 2016 via Twitter Running With Scissors RWSbleeter June 1 2016 POSTAL 1 running on Open Pandora P1 is being opened sourced in the near future Tweet Archived from the original on 4 June 2017 Retrieved 18 December 2016 via Twitter Postal Source Code Archived 2016 08 11 at the Wayback Machine by ptitseb Things are progressing Stay tuned 2016 The Original POSTAL Has Been Made Open Source Archived 2016 12 29 at the Wayback Machine on runningwithscissors com December 28 2016 license Archived 2016 12 29 at the Wayback Machine at bitbucket org gopostal postal 1 open source src parallelrealities co uk LICENSE LICENSE Archived 2016 07 21 at the Wayback Machine webarchive versions Debian bug 546800 RM starfighter RoM copyright infringement Archived 2015 10 26 at the Wayback Machine on bugs debian org Wen Howard 2005 08 11 The Ur Quan Masters linuxdevcenter com O Reilly Media Archived from the original on 2016 01 19 Retrieved 2016 01 19 When the original developers of Star Control 2 contacted the online Star Control fan community they presented an enticing question if they released the source to the 3DO version of Star Control 2 under GPL would anybody be interested in porting it to modern day computers Michael Martin a 26 year old Ph D student at Stanford University answered the call After removing proprietary 3DO specific components from the code the developers released the source for Star Control 2 to the public 1 0 release DeVries Lucas July 22 2018 Star Ruler 2 is now Open Source Official Star Ruler 2 discussion board on Steam Archived from the original on July 24 2018 Retrieved July 24 2018 Kerr Chris 2018 07 24 Blind Mind Studios releases source code for Star Ruler 2 Gamasutra Rubin Brian 2012 01 16 Starshatter The Gathering Storm Goes Open Source spacegamejunkie com Archived from the original on 2012 06 15 Retrieved 2013 01 08 Apparently the excellent and unique military space sim Starshatter The Gathering Storm has gone open source thanks to its original developer releasing the source code 14 DEC 2011 STARSHATTER THE GATHERING STORM Open Source Version 5 0 5 This download Includes the cumulative Starshatter TGS game up to version 5 0 5 No CD Required It is available for download from our Lagacy Official File section doctorfrog 2012 02 06 Because Stars Matter Starshatter Sci Fi Flight Sim is Free drfrog wordpress com Archived from the original on 2012 01 27 Retrieved 2012 01 08 Starshatter The Gathering Storm is a moderately complex moderately realistic spaceborne military flight sim that takes place in a series of dynamic campaigns source Archived 2016 07 21 at the Wayback Machine on digital eel com sais Archived 2012 12 26 at the Wayback Machine on infinitespacegames com After being sold for several years by Cheapass Games Strange Adventures in Infinite Space was released as free software and its source code was made available under the GNU General Public License Go to the Strange Adventures in Infinite Space website to download the game source code and various other goodies strange adventures in infinite space free Archived 2016 06 04 at the Wayback Machine on Rock Paper Shotgun 2009 10 07 GitHub commit on kuroneko sais 2020 05 18 47 TEK ships Team 47 GoMan for 10 D3D chips from www 47 tek com Archived 2011 01 22 at the Portuguese Web Archive on groups google com November 1997 source archived April 2009 47 TEK gibt Team 47 GoMan Source Code frei Archived 2016 07 21 at the Wayback Machine by Christian Klass on golem de May 6 1998 a b Looking for source code for Team 47 GoMAN Archived 2016 07 21 at the Wayback Machine on vogons org 2012 Tread Marks 1 7 0 now free and open source Archived 2017 02 11 at the Wayback Machine by Rick on longbowgames com January 20 2017 TreadMarks Archived 2017 05 23 at the Wayback Machine on github com Treadmarks on github com sago007 tread marks on pyra handheld com by ptitSeb 23 September 2017 tribaltrouble GitHub Archived from the original on 2014 12 16 tribaltrouble byteam penguin on github com GarageGames to Release T3D as Open Source Archived 2012 12 25 at the Wayback Machine on GarageGames Eric Preisz 2012 10 09 It s here The MIT licensed Torque 3D GitHub repo is ready Archived from the original on 2012 09 24 Tribes 1 and 2 source code anywhere Archived 2015 09 24 at the Wayback Machine on garagegames com 2013 01 04 Source code of the Captain Blood on GitHub Storm Engine source code on GitHub Storm Engine source code announcement on store steampowered com a b Grip Thomas 23 September 2020 Amnesia is now open source Frictional Games Archived from the original on 23 September 2020 Retrieved 23 September 2020 github com FrictionalGames AmnesiaAMachineForPigs github com FrictionalGames AmnesiaTheDarkDescent Love Christine 4 May 2013 Tumblr post 49592102340 Love Conquers All Games Archived from the original on 27 May 2020 You can use the python code portions for whatever you like I ve also left in the script but only for context please don t interpret this as me releasing any sort of legal rights whatsoever to the writing in the game I apologize for even needing to say this but you know lawyers Grandstaff Matt 11 January 2011 Arx Fatalis source code patch released Bethesda Blog ZeniMax Media Archived from the original on 7 October 2015 Retrieved 17 April 2020 link rel, wikipedia, wiki, book, books, library,