PC, PC, PlayStation 2, Linux, Macintosh, Linux, Macintosh, Dreamcast Deep in the bowels of the Black Mesa Federal Research Facility, a decommissioned missile base, a top-secret experiment goes terribly wrong. As aliens come through the walls and a military death squad shoots everything in sight, young research associate Gordon Freeman must scramble to stay alive....
1999 - Team Fortress Classic
PC, Linux, Macintosh One of the most popular online action games of all time, Team Fortress Classic features over nine character classes -- from Medic to Spy to Demolition Man -- enlisted in a unique style of online team warfare. Each character class possesses unique weapons, items, and abilities, as teams compete...
1999 - Half-Life: They Hunger
PC Half-Life: They Hunger is an Action game, developed and published by Black Widow Games, which was released in 1999.
2000 - Ricochet (2004)
PC, Linux, Macintosh A futuristic action game that challenges your agility as well as your aim, Ricochet features one-on-one and team matches played in a variety of futuristic battle arenas.
2000 - Counter-Strike
PC, Xbox, Macintosh, Linux Immerse yourself in the intense world of counter-terrorism. Half-Life: Counter-Strike includes Counter-Strike--the massively popular online action game built as an add-on for Half-Life--and multiplayer components from Half-Life expansions, Opposing Force and Team Fortress Classic. Team-based...
2000 - Half-Life: Adrenaline Pack
PC Half-Life: Adrenaline Pack is a Miscellaneous game, developed by Valve Software and published by Sierra Online, which was released in 2000.
2000 - Half-Life Platinum
PC, PC In the beginning, there was Half-Life, Valve's blockbuster debut. With its engrossing story line, skeletal animation system, and so-good-it's-scary AI, Half-Life blew away the gaming world. The Half-Life universe grew with the release of Team Fortress, Opposing Force, and most recently...
2000 - Half-Life: Blue Shift
PC, Linux, Macintosh Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.
2001 - Half-Life: Firearms
PC Half-Life: Firearms is an Action game, which was released in 2001.
2002 - Natural Selection
PC Natural Selection is an Action game, developed and published by Unknown Worlds Entertainment, which was released in 2002.
2002 - Half-Life: Science and Industry
PC Half-Life: Science and Industry is an Action game, which was released in 2002.
2003 - Half-Life - Generation v3
PC HALF-LIFE IS A GENERATION APART...
The critics all agree, Half-Life has been awarded 50 "game of the year" titles in publications across the world. Also billed as "best game ever" by the UK publication PC Gamer. Half-Life offers an immense environment, a rich storyline and...
2004 - Counter-Strike: Condition Zero
PC, Linux, Macintosh Condition Zero advances the Counter-Strike series by introducing single-player action and special enhancements for online play. As squad leader of an elite counter-terrorist operative, use specialized maneuvers and weapon skills to complete over 20 new missions, each containing numerous...
2004 - Half-Life: Front Line Force
PC Half-Life: Front Line Force is an Action game, published by Tony Sergi, which was released in 2004.
2004 - Counter-Strike: Source
PC, Macintosh, Linux THE NEXT INSTALLMENT OF THE WORLD'S # 1 ONLINE ACTION GAME
Counter-Strike: Source blends Counter-Strike's award-winning teamplay action with the advanced technology of Source™ technology. Featuring state of the art graphics, all new sounds, and introducing physics, Counter-Strike: Source is a...
2004 - Half-Life 2
PC, Xbox, Macintosh, Linux, Android, PC The follow-up to Half-Life continues the intense action and immersive storytelling from the original and adds more realism and responsiveness. Once again, you play the role of research scientist Gordon Freeman, who finds himself on an alien-infested Earth being picked to the bone, its resources...
2004 - Half-Life: Source
PC, Macintosh, Linux Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally remastered version of the critically acclaimed and best selling PC game, enhanced via Source technology to include physics simulation, enhanced...
2004 - Half-Life 2: Deathmatch
PC, Macintosh, Linux Fast multiplayer action set in the Half-Life 2 universe! HL2's physics adds a new dimension to deathmatch play. Play straight deathmatch or try Combine vs. Resistance teamplay. Toss a toilet at your friend today!
2005 - Half-Life 1: Anthology
PC Half-Life spawned a franchise of best-selling and critically-acclaimed single and multiplayer action games. This amazing collection offers four of those games in one package: The original Half-Life, its two official add-on packs, plus Team Fortress Classic, one of the most popular online action...
2005 - Counter-Strike 1: Anthology
PC Get all of Valve's breakthrough multiplayer shooter in one complete package. Includes the original game plus the Counter-Strike: Condition Zero multiplayer game. As a bonus, the Anthology also features new character models and gives players several new ways of customizing their squad commander....
2005 - Counter-Strike Neo
Arcade Games Counter-Strike Neo is an Action game, developed and published by Namco, which was released in Japan in 2005.
2005 - Half-Life 2: Lost Coast
PC, Linux, Macintosh Originally planned as a section of the Highway 17 chapter of Half-Life 2, Lost Coast is a playable technology showcase that introduces High Dynamic Range lighting to the Source engine.
2006 - Half-Life Deathmatch: Source
PC, Linux, Macintosh Half-Life Deathmatch: Source is a recreation of the first multiplayer game set in the Half-Life universe. Features all the classic weapons and most-played maps, now running on the Source engine.
2006 - Half-Life 2: Episode One
PC, Macintosh, Linux, Android Half-Life 2: Episode One is an expansion that continues the story from where it was left at the end of Half Life 2. You can encounter many of the characters from the previous game--they return with new abilities and storylines. This expansion focuses on the development of characters other than...
2006 - Half-Life 2: Platinum
PC Half-Life 2 has been named Game of the Year by over 35 organizations worldwide and spurred another award-winning collection of games from Valve. The Half-Life 2 Platinum Collection offers all of Valve's latest creations in one incredible offering. Plus, it also introduces Half-Life 2: Aftermath,...
2006 - Half-Life 2 Survivor
Arcade Games Half-Life 2 Survivor is an Action game, developed by Valve Software and published by Taito Corporation, which was released in Japan in 2006.
2007 - Half-Life: Azure Sheep
PC Azure Sheep is a single player mod for Half-Life.
The player is one of the Barney guards that is on post in one of the entrances of the BlackMesa facility. When the chaos starts you realize that Kate, your college, code name 'Azure Sheep' is in the complex and in big dangers.
You decide to...
2007 - The Orange Box
PC, Xbox 360, PlayStation 3, Macintosh Games included in The Orange Box compilation: The original Half-Life 2 - The player again picks up the crowbar of research scientist Gordon Freeman, who finds himself on an alien-infested Earth being picked to the bone, its resources depleted, its populace dwindling. Freeman is thrust into the...
2007 - Half-Life 2: Episode Two
PC, Macintosh, Linux, Android Half-Life 2: Episode Two intensifies the episodic trilogy, revealing an expansive wilderness environment beyond City 17 teeming with newly-spawned creatures, engaging physics-based challenges, and technical advances based on Source engine enhancements.
2007 - Team Fortress 2
PC, Macintosh, Linux Team Fortress 2 is the sequel to the game that put class-based, multiplayer team warfare on the map. This year's most anticipated online action game, TF2 delivers new gametypes, a signature art style powered by Valve's next generation animation technology, persistent player statistics, and more....
2007 - Half-Life 2: Survivor 2
Arcade Games Half-Life 2: Survivor 2 is an Action game, developed and published by Taito Corporation, which was released in Japan in 2007.
2008 - Half-Life 2: Episode Pack
PC The Half-Life 2: Episode Pack offers both of the new games created by Valve to expand the award-winning and best-selling action game franchise of all time. And, as an added bonus, Half-Life 2: Deathmatch is also included for online play.
2012 - Natural Selection 2
PC, Linux Whether you play as one of the elite marine Frontiersmen or the vicious alien Kharaa, you must use unique strategies and your abilities to win. Marines form persistent squads to find and destroy alien hives. Aliens can choose a wall-running Skulk, pudgy Gorge, flying Lerk, murderous Fade or...
TBA - Half-Life 3
PC Half-Life 3 is an Action game, developed and published by Valve Software, with no announced release date.
TBA - Half-Life 2: Episode Three
PC Half-Life 2: Episode Three is an Action game, developed and published by Valve Software, with no announced release date.