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Wikipedia

List of Valve games

January 01, 1970

Valve is an American video game developer and publisher founded in 1996 by Gabe Newell and Mike Harrington. The company is based in Bellevue, Washington.[1] Valve's first game was Half-Life, a first-person shooter released in 1998.[2] It received universal acclaim and sold over nine million retail copies.[3][4] Alongside Half-Life's launch, Valve released development tools to enable the player community to create content and mods.[5] The company then proceeded to hire the creators of popular mods such as Counter-Strike.[1]

Valve's logo

Valve continued their trend of developing predominantly first-person video games in the 2000s with a number of critically successful releases. In 2004, they released the highly anticipated sequel Half-Life 2 through their own digital distribution service Steam. The game sold over 10 million copies and was met with acclaim. Valve released two subsequent episodes for Half-Life 2 and later packaged those games together with the puzzle game Portal and the multiplayer shooter Team Fortress 2 in a collection known as The Orange Box.[6] By the end of 2008, combined retail sales of the Half-Life series, Counter-Strike series and The Orange Box had surpassed 32 million units.[4] Newell also projected that digital sales of Valve's games would eventually exceed retail sales as Steam continued to grow.[4][7] In the late 2000s, Valve released two zombie-themed first-person shooters focusing on cooperative gameplay with the Left 4 Dead series. The company continued to release multiplayer games with the launches of Counter-Strike: Global Offensive and Dota 2,[6] both of which have large esports communities fostered by Valve.[8] During the 2010s, Valve began focusing on supporting their established multiplayer games with regular content updates.[6][9][10][11] In the late 2010s, Valve began investing in virtual reality and started to develop games and other software that make use of the technology, such as Half-Life: Alyx.[12][13]

Valve is considered one of the most important and influential companies in the games industry.[14] The reception of their games, along with the creation of Steam, has prompted some publications to list Valve as one of the top game developers of all time and the most powerful company in PC gaming.[15][16][17] Newell received a BAFTA Fellowship award in 2013 for recognizing the impact Valve had left on the gaming industry in producing several successful game franchises.[5]

Games edit

Title Details
Half-Life

Original release date(s):[2][18][19]
  • NA: November 19, 1998
  • EU: November 27, 1998
  • JP: July 14, 2000
 Release years by system:
Notes:
Team Fortress Classic

Original release date(s):[26]
  • WW: April 7, 1999
 Release years by system:
  • 1999 – Windows[26]
  • 2013 – Linux, OS X[27]
Notes:
  • Multiplayer shooter[28]
  • Originally a mod for Quake, its developers were hired by Valve to remake it as a mod for Half-Life[28][29]
Ricochet

Original release date(s):[30]
  • WW: November 1, 2000
 Release years by system:
  • 2000 – Windows[31]
  • 2013 – Linux, OS X[32]
Notes:
  • Multiplayer jumping game with a Tron-like aesthetic[33]
  • Half-Life modification[31][33]
  • Added to Half-Life for free in June 2002[30]
Counter-Strike

Original release date(s):[34]
  • WW: November 9, 2000
 Release years by system:
  • 2000 – Windows[34]
  • 2003 – Xbox[35]
  • 2013 – Linux, OS X[36]
Notes:
  • Multiplayer shooter[34][35]
  • Half-Life modification;[34] its developers were hired by Valve[37]
  • Development began in 1999 with a beta and several more coming until 2000[38]
Deathmatch Classic

Original release date(s):[39]
  • WW: June 7, 2001
 Release years by system:
  • 2001 – Windows[40]
  • 2013 – Linux, OS X[41]
Notes:
Day of Defeat

Original release date(s):[43]
  • WW: May 1, 2003
 Release years by system:
Notes:
  • World War II-based multiplayer shooter[44]
  • Half-Life modification; its developers were hired by Valve[44]
Counter-Strike: Condition Zero

Original release date(s):[47][48]
  • WW: March 23, 2004
 Release years by system:
Notes:
Counter-Strike: Source

Original release date(s):[53]
  • WW: October 7, 2004
 Release years by system:
Notes:
  • Remake of Counter-Strike in the Source game engine[56]
Half-Life: Source

Original release date(s):[57]
  • WW: November 16, 2004
 Release years by system:
  • 2004 – Windows[57]
  • 2013 – Linux, OS X[58]
Notes:
  • Remaster of Half-Life in the Source game engine[57]
Half-Life 2

Original release date(s):[59]
  • WW: November 16, 2004
 Release years by system:
  • 2004 – Windows[59]
  • 2005 – Xbox[60]
  • 2007 – Xbox 360, PlayStation 3[61][62]
  • 2010 – Mac OS X[63]
  • 2013 – Linux[64]
  • 2014 – Nvidia Shield[65]
Notes:
  • Sequel to Half-Life[66]
  • Later bundled into The Orange Box[61]
Half-Life 2: Deathmatch

Original release date(s):[67]
  • WW: December 1, 2004
 Release years by system:
Notes:
  • Standalone multiplayer component of Half-Life 2[67]
Day of Defeat: Source

Original release date(s):[70]
  • WW: September 26, 2005
 Release years by system:
Notes:
  • Remake of Day of Defeat in the Source game engine[70]
Half-Life 2: Lost Coast

Original release date(s):[72]
  • WW: October 27, 2005
 Release years by system:
  • 2005 – Windows[73]
  • 2013 – OS X, Linux[74]
Notes:
Half-Life Deathmatch: Source

Original release date(s):[76]
  • WW: May 1, 2006
 Release years by system:
Notes:
  • Source remake of Half-Life Deathmatch[76]
Half-Life 2: Episode One

Original release date(s):[77]
  • WW: June 1, 2006
 Release years by system:
  • 2006 – Windows[77]
  • 2007 – Xbox 360, PlayStation 3[61][62]
  • 2010 – Mac OS X[63]
  • 2013 – Linux[64]
  • 2014 – Nvidia Shield[78]
Notes:
  • First installment in a planned trilogy of sequels to Half-Life 2[77]
  • Later bundled into The Orange Box[61]
Half-Life 2: Episode Two

Original release date(s):[61]
  • WW: October 10, 2007
 Release years by system:
  • 2007 – Windows, Xbox 360, PlayStation 3[61][62]
  • 2010 – Mac OS X[63]
  • 2013 – Linux[64]
  • 2015 – Nvidia Shield[79]
Notes:
  • Second installment in a planned trilogy of sequels to Half-Life 2[77]
  • Launched as part of The Orange Box[61]
Portal

Original release date(s):[61]
  • WW: October 10, 2007
 Release years by system:
  • 2007 – Windows, Xbox 360, PlayStation 3[61][62]
  • 2010 – Mac OS X[80]
  • 2013 – Linux[81]
  • 2014 – Nvidia Shield[65]
  • 2022 – Nintendo Switch[82]
Notes:
Team Fortress 2

Original release date(s):[61]
  • WW: October 10, 2007
 Release years by system:
  • 2007 – Windows, Xbox 360, PlayStation 3[61][62]
  • 2010 – Mac OS X[85]
  • 2013 – Linux
Notes:
  • Sequel to Team Fortress Classic[28][29]
  • Launched as part of The Orange Box[61]
  • Transitioned into a free-to-play game in June 2011[86]
  • Had a beta before release and another released afterwards in 2010[87]
The Orange Box

Original release date(s):[61]
  • WW: October 10, 2007
 Release years by system:
  • 2007 – Windows, Xbox 360, PlayStation 3[61][62]
Notes:
  • A compilation including Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Portal, and Team Fortress 2[61]
  • Ported to PlayStation 3 by Electronic Arts[88]
Left 4 Dead

Original release date(s):[89]
  • WW: November 17, 2008
 Release years by system:
  • 2008 – Windows, Xbox 360[90]
  • 2010 – Mac OS X[91]
Notes:
Left 4 Dead 2

Original release date(s):[93]
  • WW: November 17, 2009
 Release years by system:
  • 2009 – Windows, Xbox 360[94]
  • 2010 – Mac OS X[95]
  • 2013 – Linux[81]
Notes:
  • Sequel to Left 4 Dead[96]
Alien Swarm

Original release date(s):[97]
  • WW: July 19, 2010
 Release years by system:
2010 – Windows[97]
Notes:
Portal 2

Original release date(s):[98]
  • WW: April 18, 2011
 Release years by system:
  • 2011 – Mac OS X, Windows, PlayStation 3, Xbox 360[98]
  • 2014 – Linux[99]
  • 2022 – Nintendo Switch[82]
Notes:
Counter-Strike: Global Offensive

Original release date(s):[103]
  • WW: August 21, 2012
 Release years by system:
  • 2012 – OS X, PlayStation 3, Windows, Xbox 360[103]
  • 2014 – Linux[104]
Notes:
Dota 2

Original release date(s):[106]
  • WW: July 9, 2013
 Release years by system:
2013 – Windows, Linux, OS X[107]
Notes:
Counter-Strike Nexon: Studio

Original release date(s):[111]
  • WW: October 7, 2014
 Release years by system:
2014 - Windows[111]
Notes:
  • Originally named Counter-Strike Nexon: Zombies, renamed in 2019, developed with NEXON[112]
The Lab

Original release date(s):[113]
  • WW: April 5, 2016
 Release years by system:
2016 – Windows[113][114]
Notes:
Artifact

Original release date(s):[115]
  • WW: November 28, 2018
 Release years by system:
2018 – Windows, macOS, Linux
Notes:
Dota Underlords

Original release date(s):[119]
  • WW: February 25, 2020
 Release years by system:
2020 – Windows, macOS, Linux, iOS, Android
Notes:
Half-Life: Alyx

Original release date(s):[122]
  • WW: March 23, 2020
 Release years by system:
2020 – Windows, Linux
Notes:
Artifact: Foundry

Original release date(s):[123]
  • WW: March 4, 2021
 Release years by system:
2021 - Windows, Linux, macOS
Notes:
  • Expanded version with more features and streamlined gameplay[123]
  • Demo of Artifact 2.0, Valve decided the player base was too small to justify continuation of the project so it remains unfinished[124]
Aperture Desk Job

Original release date(s):[125]
  • WW: March 1, 2022
 Release years by system:
2022 – Windows, Linux
Notes:
Counter-Strike 2

Original release date(s):[126]
  • WW: September 27, 2023
 Release years by system:
2023 - Windows, Linux
Notes:


Games published edit

List of published games
Title Details
Codename Gordon

Original release date(s):[127][128]
  • WW: May 18, 2004
 Release years by system:
2004 – Windows[127][128]
Notes:
Garry's Mod

Original release date(s):[131]
  • WW: November 29, 2006
 Release years by system:
Notes:
Portal: Still Alive

Original release date(s):[136]
  • WW: June 26, 2010
 Release years by system:
Notes:
  • Port of the original Portal with 14 bonus levels, developed by WeCreateStuff and ported as an Xbox Live Arcade exclusive. It is based on WeCreateStuffs Flash Version titled "Portal: The Flash Version" [136]
Aperture Hand Lab

Original release date(s):[137]
  • WW: June 25, 2019
 Release years by system:
Notes:
  • Non-canon Portal spin-off developed by Cloudhead Games as a tech demo for the Valve index and HTC Vive[137]


Canceled and unreleased games edit

Several games announced by Valve as being in development have since been put on hold indefinitely or cancelled.

Half-Life edit

Main article: Unreleased Half-Life games
  • Half-Life: Hostile Takeover: an expansion pack for the original Half-Life developed by 2015, Inc.,[138] reportedly cancelled in 2000.[139]
  • Half-Life 2: Episode Three: announced in 2006 with a release date of late 2007, and was put on hold, possibly cancelled due to scope creep, unsatisfactory internal experiments, and the desire to develop the Source 2 engine first.[140]
  • Untitled Half-Life 2 episode: developed by Junction Point Studios and led by Warren Spector. Development ceased when Junction Point signed a deal with Disney Interactive Studios to develop Epic Mickey.[141] Valve took Junction Point's project and passed to Arkane Studios.[142]
  • Ravenholm (also known as Return to Ravenholm or Half-Life 2: Episode Four): developed by Arkane Studios around 2006–2007, with Opposing Force protagonist Adrian Shephard as the player character and Father Grigori from Half-Life 2 in a supporting role.[142]
  • Half-Life 3: a version of Half-Life 3 was in development on the Source 2 engine from 2013 to 2014. Valve planned to incorporate procedurally generated levels alongside a "crafted experience" so that no two playthroughs of the game would be identical. It was cancelled as Source 2 was not yet stable enough to support full-scale development.[143]
  • Borealis: a virtual reality game led by writer Marc Laidlaw in development in 2015, set aboard the time-travelling ship Borealis. It was cancelled as it failed to gain momentum.[143]

Others edit

  • Untitled submarine game: one of Valve's earliest game ideas was for a submarine game, with Valve co-founder Mike Harrington seeing an opportunity to create "fantastic underwater visuals and gameplay". It is unknown whether it ever advanced beyond the conceptual stage.[144]
  • Prospero: a third-person exploration game with a science fantasy theme. The project was in development at the same time as Half-Life.[145] Prospero's development team transitioned to work on Half-Life, which had gained more traction.[146]
  • Untitled role-playing game (I): a fantasy, action role-playing game about fairies that was in a prototype phase and cancelled prior to Left 4 Dead's release.[147]
  • The Crossing: a first-person shooter developed in collaboration with Arkane Studios. The project was announced in 2007 and put on hold in May 2009.[148]
  • Stars of Blood: a space pirate game. In November 2012, Newell revealed the project's name and confirmed that it was no longer in development.[149]
  • Left 4 Dead 3: an open-world sequel to Left 4 Dead 2 that was set in Morocco. It was cancelled when it became clear that the Source 2 engine was not yet ready to support full-scale game development.[143]
    • Hot Dog: another attempt at creating a Left 4 Dead game, codenamed so that fans would not recognize it if its name were leaked.[143]
  • Untitled role-playing game (II): a fantasy RPG that was inspired by The Elder Scrolls, Dark Souls, and Monster Hunter series. It was at one point resurrected as a single-player RPG about the Dota 2 character Axe before it was shelved again.[143]
  • A.R.T.I.: a lighthearted voxel-based game that allowed for open-ended creation and destruction in a vein similar to Minecraft. It was resurrected as a VR game but shelved again when Half-Life: Alyx eclipsed its development.[143]
  • SimTrek: a virtual reality game developed primarily by the creators of Kerbal Space Program. It was cancelled during the development of Half-Life: Alyx.[143]
  • In the Valley of Gods: a period adventure game set in 1920s Egypt developed by Campo Santo, a studio acquired by Valve in 2018. It was put on hold in late 2019, with the designers shifting to other Valve projects.[150]

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January 01, 1970
list, valve, games, valve, american, video, game, developer, publisher, founded, 1996, gabe, newell, mike, harrington, company, based, bellevue, washington, valve, first, game, half, life, first, person, shooter, released, 1998, received, universal, acclaim, s. Valve is an American video game developer and publisher founded in 1996 by Gabe Newell and Mike Harrington The company is based in Bellevue Washington 1 Valve s first game was Half Life a first person shooter released in 1998 2 It received universal acclaim and sold over nine million retail copies 3 4 Alongside Half Life s launch Valve released development tools to enable the player community to create content and mods 5 The company then proceeded to hire the creators of popular mods such as Counter Strike 1 Valve s logo Valve continued their trend of developing predominantly first person video games in the 2000s with a number of critically successful releases In 2004 they released the highly anticipated sequel Half Life 2 through their own digital distribution service Steam The game sold over 10 million copies and was met with acclaim Valve released two subsequent episodes for Half Life 2 and later packaged those games together with the puzzle game Portal and the multiplayer shooter Team Fortress 2 in a collection known as The Orange Box 6 By the end of 2008 combined retail sales of the Half Life series Counter Strike series and The Orange Box had surpassed 32 million units 4 Newell also projected that digital sales of Valve s games would eventually exceed retail sales as Steam continued to grow 4 7 In the late 2000s Valve released two zombie themed first person shooters focusing on cooperative gameplay with the Left 4 Dead series The company continued to release multiplayer games with the launches of Counter Strike Global Offensive and Dota 2 6 both of which have large esports communities fostered by Valve 8 During the 2010s Valve began focusing on supporting their established multiplayer games with regular content updates 6 9 10 11 In the late 2010s Valve began investing in virtual reality and started to develop games and other software that make use of the technology such as Half Life Alyx 12 13 Valve is considered one of the most important and influential companies in the games industry 14 The reception of their games along with the creation of Steam has prompted some publications to list Valve as one of the top game developers of all time and the most powerful company in PC gaming 15 16 17 Newell received a BAFTA Fellowship award in 2013 for recognizing the impact Valve had left on the gaming industry in producing several successful game franchises 5 Contents 1 Games 1 1 Games published 1 2 Canceled and unreleased games 1 2 1 Half Life 1 2 2 Others 2 ReferencesGames editTitle Details Half LifeOriginal release date s 2 18 19 NA November 19 1998EU November 27 1998JP July 14 2000 Release years by system 1998 Windows 2 18 2001 PlayStation 2 20 2013 Linux OS X 21 Notes First person shooter with single player campaign and multiplayer deathmatch 18 Spawned two expansion packs Half Life Opposing Force 1999 and Half Life Blue Shift 2001 developed by Gearbox Software PlayStation 2 version includes an exclusive cooperative multiplayer mode Decay developed by Gearbox Software 22 Dreamcast version cancelled 23 In 1998 a few months before the game s release an OEM demo titled Half Life Day One was released 24 On February 12 1999 the second demo Half Life Uplink was released 25 Team Fortress ClassicOriginal release date s 26 WW April 7 1999 Release years by system 1999 Windows 26 2013 Linux OS X 27 Notes Multiplayer shooter 28 Originally a mod for Quake its developers were hired by Valve to remake it as a mod for Half Life 28 29 RicochetOriginal release date s 30 WW November 1 2000 Release years by system 2000 Windows 31 2013 Linux OS X 32 Notes Multiplayer jumping game with a Tron like aesthetic 33 Half Life modification 31 33 Added to Half Life for free in June 2002 30 Counter StrikeOriginal release date s 34 WW November 9 2000 Release years by system 2000 Windows 34 2003 Xbox 35 2013 Linux OS X 36 Notes Multiplayer shooter 34 35 Half Life modification 34 its developers were hired by Valve 37 Development began in 1999 with a beta and several more coming until 2000 38 Deathmatch ClassicOriginal release date s 39 WW June 7 2001 Release years by system 2001 Windows 40 2013 Linux OS X 41 Notes Half Life modification 39 Recreation of the deathmatch mode from id Software s first person shooter Quake in the GoldSrc game engine 42 Day of DefeatOriginal release date s 43 WW May 1 2003 Release years by system 2003 Windows 44 2013 Linux OS X 45 46 Notes World War II based multiplayer shooter 44 Half Life modification its developers were hired by Valve 44 Counter Strike Condition ZeroOriginal release date s 47 48 WW March 23 2004 Release years by system 2004 Windows 47 2013 Linux OS X 49 50 Notes Collaboration with Gearbox Software Ritual Entertainment Rogue Entertainment and Turtle Rock Studios 49 51 Had a large bonus campaign called Counter Strike Condition Zero Deleted Scenes that had more tightly scripted levels 52 Counter Strike SourceOriginal release date s 53 WW October 7 2004 Release years by system 2004 Windows 53 2010 Mac OS X 54 2013 Linux 55 Notes Remake of Counter Strike in the Source game engine 56 Half Life SourceOriginal release date s 57 WW November 16 2004 Release years by system 2004 Windows 57 2013 Linux OS X 58 Notes Remaster of Half Life in the Source game engine 57 Half Life 2Original release date s 59 WW November 16 2004 Release years by system 2004 Windows 59 2005 Xbox 60 2007 Xbox 360 PlayStation 3 61 62 2010 Mac OS X 63 2013 Linux 64 2014 Nvidia Shield 65 Notes Sequel to Half Life 66 Later bundled into The Orange Box 61 Half Life 2 DeathmatchOriginal release date s 67 WW December 1 2004 Release years by system 2004 Windows 67 2010 Mac OS X 68 2013 Linux 69 Notes Standalone multiplayer component of Half Life 2 67 Day of Defeat SourceOriginal release date s 70 WW September 26 2005 Release years by system 2005 Windows 70 2010 Mac OS X 71 2013 Linux 45 Notes Remake of Day of Defeat in the Source game engine 70 Half Life 2 Lost CoastOriginal release date s 72 WW October 27 2005 Release years by system 2005 Windows 73 2013 OS X Linux 74 Notes An additional level for Half Life 2 released to demonstrate high dynamic range rendering in the Source game engine 75 Half Life Deathmatch SourceOriginal release date s 76 WW May 1 2006 Release years by system 2006 Windows 76 Notes Source remake of Half Life Deathmatch 76 Half Life 2 Episode OneOriginal release date s 77 WW June 1 2006 Release years by system 2006 Windows 77 2007 Xbox 360 PlayStation 3 61 62 2010 Mac OS X 63 2013 Linux 64 2014 Nvidia Shield 78 Notes First installment in a planned trilogy of sequels to Half Life 2 77 Later bundled into The Orange Box 61 Half Life 2 Episode TwoOriginal release date s 61 WW October 10 2007 Release years by system 2007 Windows Xbox 360 PlayStation 3 61 62 2010 Mac OS X 63 2013 Linux 64 2015 Nvidia Shield 79 Notes Second installment in a planned trilogy of sequels to Half Life 2 77 Launched as part of The Orange Box 61 PortalOriginal release date s 61 WW October 10 2007 Release years by system 2007 Windows Xbox 360 PlayStation 3 61 62 2010 Mac OS X 80 2013 Linux 81 2014 Nvidia Shield 65 2022 Nintendo Switch 82 Notes First person puzzle platformer 83 Developed by a team including DigiPen Institute of Technology graduates who were hired by Valve to create a successor to Narbacular Drop 83 Launched as part of The Orange Box 61 First leaked in 2005 as a beta without GLaDOS later shown again in 2006 with another beta 84 Team Fortress 2Original release date s 61 WW October 10 2007 Release years by system 2007 Windows Xbox 360 PlayStation 3 61 62 2010 Mac OS X 85 2013 Linux Notes Sequel to Team Fortress Classic 28 29 Launched as part of The Orange Box 61 Transitioned into a free to play game in June 2011 86 Had a beta before release and another released afterwards in 2010 87 The Orange BoxOriginal release date s 61 WW October 10 2007 Release years by system 2007 Windows Xbox 360 PlayStation 3 61 62 Notes A compilation including Half Life 2 Half Life 2 Episode One Half Life 2 Episode Two Portal and Team Fortress 2 61 Ported to PlayStation 3 by Electronic Arts 88 Left 4 DeadOriginal release date s 89 WW November 17 2008 Release years by system 2008 Windows Xbox 360 90 2010 Mac OS X 91 Notes Cooperative first person shooter set in a zombie apocalypse 90 Developed by Turtle Rock Studios who were acquired by Valve prior to the release of Left 4 Dead 92 Left 4 Dead 2Original release date s 93 WW November 17 2009 Release years by system 2009 Windows Xbox 360 94 2010 Mac OS X 95 2013 Linux 81 Notes Sequel to Left 4 Dead 96 Alien SwarmOriginal release date s 97 WW July 19 2010 Release years by system 2010 Windows 97 Notes Cooperative top down shooter 97 Remake of the Unreal Tournament 2004 mod Alien Swarm its developers were hired by Valve 97 Released for free along with full game code and mod tools 97 Portal 2Original release date s 98 WW April 18 2011 Release years by system 2011 Mac OS X Windows PlayStation 3 Xbox 360 98 2014 Linux 99 2022 Nintendo Switch 82 Notes Sequel to Portal 100 Features cross platform play between PC and PlayStation 3 versions 101 Valve hired the developers of Tag The Power of Paint to contribute to Portal 2 s design 102 Counter Strike Global OffensiveOriginal release date s 103 WW August 21 2012 Release years by system 2012 OS X PlayStation 3 Windows Xbox 360 103 2014 Linux 104 Notes Collaboration with Hidden Path Entertainment 105 Dota 2Original release date s 106 WW July 9 2013 Release years by system 2013 Windows Linux OS X 107 Notes Multiplayer online battle arena game 106 Sequel to the Warcraft III mod Defense of the Ancients its lead designer IceFrog was hired by Valve 108 109 Beta version launched in 2011 110 Counter Strike Nexon StudioOriginal release date s 111 WW October 7 2014 Release years by system 2014 Windows 111 Notes Originally named Counter Strike Nexon Zombies renamed in 2019 developed with NEXON 112 The LabOriginal release date s 113 WW April 5 2016 Release years by system 2016 Windows 113 114 Notes Virtual reality game released for free to support the launch of the HTC Vive virtual reality headset 113 Compilation of eight minigames set mostly in the universe of Portal 113 ArtifactOriginal release date s 115 WW November 28 2018 Release years by system 2018 Windows macOS Linux Notes Digital collectible card game based on Dota 2 116 117 Designed by Magic The Gathering creator Richard Garfield 118 Android and iOS ports were planned for release in 2019 before development on the game stopped Dota UnderlordsOriginal release date s 119 WW February 25 2020 Release years by system 2020 Windows macOS Linux iOS Android Notes Standalone version of Dota Auto Chess a community created Dota 2 game mode 120 First launched in early access in June 2019 121 Half Life AlyxOriginal release date s 122 WW March 23 2020 Release years by system 2020 Windows Linux Notes Made exclusively for virtual reality headsets 13 Uses the Source 2 engine 13 Artifact FoundryOriginal release date s 123 WW March 4 2021 Release years by system 2021 Windows Linux macOS Notes Expanded version with more features and streamlined gameplay 123 Demo of Artifact 2 0 Valve decided the player base was too small to justify continuation of the project so it remains unfinished 124 Aperture Desk JobOriginal release date s 125 WW March 1 2022 Release years by system 2022 Windows Linux Notes Free tech demo for the Steam Deck Counter Strike 2Original release date s 126 WW September 27 2023 Release years by system 2023 Windows Linux Notes Replaced Counter Strike Global Offensive upon release Uses Source 2 126 Games published edit List of published games Title Details Codename GordonOriginal release date s 127 128 WW May 18 2004 Release years by system 2004 Windows 127 128 Notes Developed by NuclearVision and published by Valve 127 128 Also known as Half Life 2D 129 Unavailable since NuclearVision s bankruptcy 130 Garry s ModOriginal release date s 131 WW November 29 2006 Release years by system 2006 Windows 131 2010 Mac OS X 132 2013 Linux 133 Notes Half Life 2 modification developed by Facepunch Studios 134 135 Initially released in 2004 its standalone release was published by Valve in 2006 135 132 Portal Still AliveOriginal release date s 136 WW June 26 2010 Release years by system 2010 Xbox 360 136 Notes Port of the original Portal with 14 bonus levels developed by WeCreateStuff and ported as an Xbox Live Arcade exclusive It is based on WeCreateStuffs Flash Version titled Portal The Flash Version 136 Aperture Hand LabOriginal release date s 137 WW June 25 2019 Release years by system 2019 Windows 137 Notes Non canon Portal spin off developed by Cloudhead Games as a tech demo for the Valve index and HTC Vive 137 Canceled and unreleased games edit Several games announced by Valve as being in development have since been put on hold indefinitely or cancelled Half Life edit Main article Unreleased Half Life games Half Life Hostile Takeover an expansion pack for the original Half Life developed by 2015 Inc 138 reportedly cancelled in 2000 139 Half Life 2 Episode Three announced in 2006 with a release date of late 2007 and was put on hold possibly cancelled due to scope creep unsatisfactory internal experiments and the desire to develop the Source 2 engine first 140 Untitled Half Life 2 episode developed by Junction Point Studios and led by Warren Spector Development ceased when Junction Point signed a deal with Disney Interactive Studios to develop Epic Mickey 141 Valve took Junction Point s project and passed to Arkane Studios 142 Ravenholm also known as Return to Ravenholm or Half Life 2 Episode Four developed by Arkane Studios around 2006 2007 with Opposing Force protagonist Adrian Shephard as the player character and Father Grigori from Half Life 2 in a supporting role 142 Half Life 3 a version of Half Life 3 was in development on the Source 2 engine from 2013 to 2014 Valve planned to incorporate procedurally generated levels alongside a crafted experience so that no two playthroughs of the game would be identical It was cancelled as Source 2 was not yet stable enough to support full scale development 143 Borealis a virtual reality game led by writer Marc Laidlaw in development in 2015 set aboard the time travelling ship Borealis It was cancelled as it failed to gain momentum 143 Others edit Untitled submarine game one of Valve s earliest game ideas was for a submarine game with Valve co founder Mike Harrington seeing an opportunity to create fantastic underwater visuals and gameplay It is unknown whether it ever advanced beyond the conceptual stage 144 Prospero a third person exploration game with a science fantasy theme The project was in development at the same time as Half Life 145 Prospero s development team transitioned to work on Half Life which had gained more traction 146 Untitled role playing game I a fantasy action role playing game about fairies that was in a prototype phase and cancelled prior to Left 4 Dead s release 147 The Crossing a first person shooter developed in collaboration with Arkane Studios The project was announced in 2007 and put on hold in May 2009 148 Stars of Blood a space pirate game In November 2012 Newell revealed the project s name and confirmed that it was no longer in development 149 Left 4 Dead 3 an open world sequel to Left 4 Dead 2 that was set in Morocco It was cancelled when it became clear that the Source 2 engine was not yet ready to support full scale game development 143 Hot Dog another attempt at creating a Left 4 Dead game codenamed so that fans would not recognize it if its name were leaked 143 Untitled role playing game II a fantasy RPG that was inspired by The Elder Scrolls Dark Souls and Monster Hunter series It was at one point resurrected as a single player RPG about the Dota 2 character Axe before it was shelved again 143 A R T I a lighthearted voxel based game that allowed for open ended creation and destruction in a vein similar to Minecraft 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