List of Valve games

Valve Corporation Logo

Valve Corporation is an American video game developer and publisher founded in 1996 by former Microsoft employees Gabe Newell and Mike Harrington and currently based in Bellevue, Washington. The studio is known for their first-person shooter series, including Half-Life, Counter-Strike, Team Fortress, and Day of Defeat. All games released by Valve use one of two engines of their own creation - the Quake-based GoldSRC or its successor, Source.

Half-Life

Title	Details
Half-Life Original release date(s):	Release years by system: 1998 – Microsoft Windows 2001 – PlayStation 2 2013 – Linux, OS X
	Notes: Valve's first video game. Ported to the PlayStation 2 in 2001 along with the co-operative game Half-Life: Decay. Singleplayer component ported to the Source engine and released on Windows as Half-Life: Source in 2004. Multiplayer component ported to the Source engine and released on Windows as Half-Life Deathmatch: Source in 2005.
Half-Life: Opposing Force Original release date(s):	Release years by system: 1999 – Microsoft Windows 2013 – Linux, OS X
	Notes: Developed with Gearbox Software. The first expansion pack for Half-Life.
Half-Life: Blue Shift Original release date(s):	Release years by system: 2001 – Microsoft Windows 2013 – Linux, OS X
	Notes: Developed with Gearbox Software. The second expansion pack for Half-Life.
Half-Life: Decay Original release date(s):	Release years by system: 2001 – PlayStation 2
	Notes: included in the PS2 version of Half-Life

Promotional releases

Title	Details
Half-Life: Day One Original release date(s): 1998	Release years by system: 1998 – Microsoft Windows
	Notes: Demo for Half-Life packaged with certain graphics cards.
Half-Life: Uplink Original release date(s): February 12, 1999	Release years by system: 1999 – Microsoft Windows
	Notes: Demo for Half-Life which includes levels and areas not present in the full game.

Half-Life 2

Title	Details
Half-Life 2 Original release date(s):	Release years by system: 2004 – Microsoft Windows 2005 – Xbox 2007 – PlayStation 3, Xbox 360 2010 – OS X 2013 – Linux
	Notes: Sequel to the original Half-Life. Bundled with The Orange Box, which was released on PC, Xbox 360, and PlayStation 3 in 2007. After receiving an overhaul update to the latest Source Engine build, it was released for OS X in 2010.
Half-Life 2: Deathmatch Original release date(s):	Release years by system: 2004 – Microsoft Windows 2010 – OS X 2013 – Linux
	Notes: Multiplayer component to Half-Life 2 released separately from the main game.
Half-Life 2: Lost Coast Original release date(s):	Release years by system: 2005 – Microsoft Windows 2013 – Linux, OS X
	Notes: Promotional tech demo showcasing the high dynamic range lighting capabilities of the Source engine.
Half-Life 2: Episode One Original release date(s):	Release years by system: 2006 – Microsoft Windows 2007 – PlayStation 3, Xbox 360 2010 – OS X 2013 – Linux
	Notes: The first installment in a planned trilogy of sequels to Half-Life 2. Bundled with The Orange Box, which was released on PC, Xbox 360, and PlayStation 3 in 2007.
Half-Life 2: Episode Two Original release date(s):	Release years by system: 2007 – Microsoft Windows, PlayStation 3, Xbox 360 2010 – OS X 2013 – Linux
	Notes: The second installment in a planned trilogy of sequels to Half-Life 2. Bundled with The Orange Box, which was released on PC, Xbox 360, and PlayStation 3 in 2007.

Counter-Strike

Title	Details
Counter-Strike Original release date(s):	Release years by system: 2000 – Microsoft Windows 2004 – Xbox 2013 – Linux, OS X
	Notes: Multiplayer first-person shooter modification of the original Half-Life.
Counter-Strike: Condition Zero Original release date(s):	Release years by system: 2004 – Microsoft Windows, Xbox 2013 – Linux, OS X
	Notes: Developed with Gearbox Software, Ritual Entertainment, Rogue Entertainment, and Turtle Rock Studios. Follow-up to Counter-Strike which includes single-player missions.
Counter-Strike: Source Original release date(s):	Release years by system: 2004 – Microsoft Windows 2010 – OS X 2013 – Linux
	Notes: Source engine remake of the original Counter-Strike.
Counter-Strike: Global Offensive Original release date(s):	Release years by system: 2012 – Microsoft Windows, OS X, PlayStation 3, Xbox 360
	Notes: Is downloadable title on Xbox 360 and PlayStation 3.

Team Fortress

Title	Details
Team Fortress Classic Original release date(s):	Release years by system: 1999 – Microsoft Windows 2013 – Linux, OS X
	Notes: Class-based multiplayer shooter adapted from the Quake modification Team Fortress.
Team Fortress 2 Original release date(s):	Release years by system: 2007 – Microsoft Windows, PlayStation 3, Xbox 360 2010 – OS X 2012 – Linux
	Notes: Sequel to Team Fortress Classic. Bundled with The Orange Box, which was released on PC, Xbox 360, and PlayStation 3 in 2007. Available for free on Steam as of June 23, 2011.

Day of Defeat

Title	Details
Day of Defeat Original release date(s):	Release years by system: 2003 – Microsoft Windows 2013 – Linux, OS X
	Notes: World War II-based multiplayer shooter modification of the original Half-Life.
Day of Defeat: Source Original release date(s):	Release years by system: 2005 – Microsoft Windows 2010 – OS X 2013 – Linux
	Notes: Source engine remake of Day of Defeat.

Portal

Title	Details
Portal Original release date(s):	Release years by system: 2007 – Microsoft Windows, PlayStation 3, Xbox 360 2010 – OS X 2013 – Linux
	Notes: Physics-based first-person puzzle game developed by graduates of DigiPen Institute of Technology. Bundled with The Orange Box, which was released on PC, Xbox 360, and PlayStation 3 in 2007.
Portal 2 Original release date(s):	Release years by system: 2011 – Microsoft Windows, OS X, PlayStation 3, Xbox 360
	Notes: Sequel to Portal. First Valve game developed for the PlayStation 3 by Valve and the first console version of a Valve game to feature Steam and Steamworks.

Left 4 Dead

Title	Details
Left 4 Dead Original release date(s):	Release years by system: 2008 – Microsoft Windows, Xbox 360 2010 – OS X
	Notes: Co-operative shooter set in the zombie apocalypse.
Left 4 Dead 2 Original release date(s):	Release years by system: 2009 – Microsoft Windows, Xbox 360 2010 – OS X 2013 – Linux
	Notes: Sequel to Left 4 Dead.

Other games

Title	Details
Deathmatch Classic Original release date(s):	Release years by system: 2000 – Microsoft Windows 2013 – Linux, OS X
	Notes: Multiplayer modification of the original Half-Life.
Ricochet Original release date(s):	Release years by system: 2000 – Microsoft Windows 2013 – Linux, OS X
	Notes: Multiplayer modification of the original Half-Life.
The Orange Box Original release date(s):	Release years by system: 2007 – Microsoft Windows, PlayStation 3, Xbox 360 2010 – OS X 2013 – Linux
	Notes: Not a game but a compilation including Half-Life 2, Half-Life 2: Episode One and Episode Two, Team Fortress 2, and Portal. PlayStation 3 version's development was outsourced to Electronic Arts due to Valve being a critic of the PS3 hardware at the time.
Alien Swarm Original release date(s):	Release years by system: 2010 – Microsoft Windows
	Notes: A remake of the Alien Swarm mod for Unreal Tournament 2004 on the Source engine made by the developers between other projects after they were hired by Valve. Released for free via Steam with access to the complete code base to help developers creating Source engine mods.
Dota 2 Original release date(s):	Release years by system: 2013 – Microsoft Windows, OS X, Linux
	Notes: Sequel to Defense of the Ancients. Valve's first multiplayer online battle arena game.

References

• "Valve - Games". Valve Corporation. Retrieved 2010-01-25.