Half-Life: Opposing Force
1999 First-person shooter -
- multiplayer 
Half-Life: Opposing Force is an expansion pack for Valve Software's science fiction first-person shooter video game Half-Life. The game was developed by Gearbox Software and Valve Corporation and published by Sierra Entertainment on November 19, 1999 ...
more on Wikipedia15 Games like Half-Life: Opposing Force - Microsoft Windows - Mac OS X - GNU/Linux
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Serious Sam
2001 First-person shooter - 
- multiplayer
Serious Sam is a first-person shooter video game, released in two episodes and the first in the Serious Sam series, developed by Croteam. Originally released for the PC market only, Serious Sam 's rising popularity resulted in the porting ...
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System Shock 2 Steam Key GLOBAL is a game released on 2000-08-11. Published by Nightdive Studios.
System Shock 2 is a first-person shooter action role-playing survival horror video game for Microsoft Windows, Apple OS X and Linux. The title was designed by Ken Levine and co-developed by Irrational Games and Looking Glass Studios. Originally inten ...
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Counter-Strike
1999 First-person shooter -
Counter-Strike is a first-person shooter video game developed by Valve Corporation. It was initially developed and released as a Half-Life modification by Minh "Gooseman" Le and Jess "Cliffe" Cliffe in 1999, before Le and Cliffe were hired and the ga ...
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SourceForts
2005 First-person shooter - - multiplayer
SourceForts is a multiplayer capture the flag mod for the computer game Half-Life 2. Two teams, red and blue, construct forts made from metal cubes and panels to protect their flag, and attempt to break into their opponent's fort to steal the enemy f ...
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Half-Life 2: Episode One
2006 First-person shooter - 
Half-Life 2: Episode One is a first-person shooter video game, the first in a series of episodes that serve as the sequel for the 2004 Half-Life 2. It was developed by Valve Corporation and released on June 1, 2006. Originally called Half-Life 2: Aft ...
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Half-Life 2: Episode Two
2007 First-person shooter -
Half-Life 2: Episode Two is a first-person shooter video game, the second episode in a series of sequels to the 2004 Half-Life 2. It was developed by Valve Corporation in tandem with Episode One, the first game in the series, and released in 2007 via ...
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Serious Sam II
2005 First-person shooter - - multiplayer
Serious Sam II is a science fiction first-person shooter video game released for Microsoft Windows and Xbox and the sequel to the 2002 computer game Serious Sam: The Second Encounter, making it the third game in the Serious Sam series. It was designe ...
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CodeRED: Alien Arena
2004 First-person shooter - - multiplayer
Alien Arena (initially CodeRED: Alien Arena) is a free, stand-alone first-person shooter computer game. Begun by COR Entertainment in 2004, the game combines a 1950s-era sci-fi atmosphere with gameplay similar to the Quake, Doom, and Unreal Tournamen ...
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BioShock Infinite: Burial at Sea
2013 First-person shooter -
BioShock Infinite: Burial at Sea is an episodic expansion sequel to the first-person shooter video game BioShock Infinite, and a prequel to the original BioShock, and was developed by Irrational Games, and published by 2K Games. It is available on Li ...
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Time for a trip down memory lane with Quake II, a first-person shooter that was a groundbreaking creation by id Software at its time! Shed tears of nostalgia as you battle for survival against a vicious race of aliens!
Quake II is a first-person shooter video game developed by id Software and published by Activision. It is not a direct sequel to Quake; id decided to revert to an existing trademark when they were unable to agree on a new name that did not violate an ...
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Return to Castle Wolfenstein is a timeless classic developed by Grey Dog, that has you lead the way on a quest to stop Nazi Germany and ruin their evil plans! In single player mode you seek to strike the Third Reich to their core by gunning down Heinrich Himmler, the head of SS. Join other players in multiplayer mode and form your own Allied force to fight the Nazis in WWII!
Return to Castle Wolfenstein is a first-person shooter video game published by Activision and originally released on November 19, 2001 for Microsoft Windows and subsequently for PlayStation 2, Xbox, Linux and Macintosh. The single player game was dev ...
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Super 3D Noah's Ark
1994 First-person shooter -
- Single player
Super 3D Noah's Ark is an unlicensed Christian-themed video game for the Super Nintendo Entertainment System and DOS. It was released by the biblical video game producer Wisdom Tree in 1994, and was the only commercially released SNES game in the U.S ...
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Descent 3
1999 First-person shooter -
Descent 3 (stylized as Descent³) is a first-person shooter video game developed by Outrage Entertainment and published by Interplay Productions. It was released for Microsoft Windows on June 17, 1999, for Mac OS in November 1999, and for Linux in ...
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Postal 2
2003 First-person shooter - - multiplayer Single player
Postal 2 (stylized as Postal²) is a first-person shooter video game by Running with Scissors, and it is the sequel to the 1997 game Postal. Both are intentionally highly controversial due to high levels of violence and stereotyping. Unlike its pre ...
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Deathmatch Classic
2000 First-person shooter -
Deathmatch Classic or DMC is a first-person shooter multiplayer video game developed by Valve as a tribute to id Software's Quake. It was released on June 1, 2001. ...
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