For a game similar to 'Quake 4' ...

Quake 4

Quake 4

2005  First-person shooter - Microsoft Windows Xbox 360 Mac OS X
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Quake 4 - Wikipedia Quake 4 is the fourth title in the series of Quake first-person shooter computer games. The game was developed by Raven Software and published by Activision. Raven Software collaborated with id Software, the creators and historical developers of prec ...   more on Wikipedia

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Postal 2

Postal 2

2003  First-person shooter - GNU/Linux Mac OS X Microsoft Windows - multiplayer  Single player  
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Postal 2 - Wikipedia 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 ...   more on Wikipedia
Call of Duty: Modern Warfare 2

Call of Duty: Modern Warfare 2

2009  First-person shooter - Mac OS X Xbox 360 Microsoft Windows Sony PlayStation 3 - cooperative  multiplayer  
Call of Duty: Modern Warfare 2 Steam key brings an all-out multiplayer FPS game for your complete entertainment! Complete and untamed mayhem, multiple adrenalin rushes, and a raging storm of bullets, gas, and grenades will meet and greet you in every battle – are you ready for the ultimate face-off between the axis of power? Join battle amongst the men on whose shoulders lies our future! Following the path of Success The title continues right from where its predecessor, Call of Duty 4: Modern Warfare has ended. The award-winning blockbuster title has earned tremendous approval by the worldwide community, and if you decide to buy Call of Duty: Modern Warfare 2 Steam key, you may expect the same! Plus, the legendary composer, Hans Zimmer himself, was responsible for the in-game soundtracks! New Co-op Mode Immerse in hot and unpolished tactical action along with your friend! Co-operate and play through numerous time-trial and objective-based missions online! With each rank-up, you’ll unlock harder, more demanding, and more difficult missions! With Call of Duty: Modern Warfare 2 Steam key you’ll be able to re-experience the fan favourites from the previous iteration, as well as the all-new, exclusive trials! Online Multiplayer One of the best competitive FPS games in the world certainly must have a multiplayer that would meet the titles name with corresponding size and scale of content! That’s why the Call of Duty Modern Warfare 2 Steam key brings a multiplayer system that is nothing but excellent! 2ndary weapons, shields, additional equipment, upgradeable perks, dual attachments, and plenty more in-game!  
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Call of Duty: Modern Warfare 2 - Wikipedia Call of Duty: Modern Warfare 2 is a 2009 first-person shooter political war thriller video game developed by Infinity Ward and published by Activision for Xbox 360, PlayStation 3 and Microsoft Windows. Officially announced on February 11, 2009, the g ...   more on Wikipedia
Return to Castle Wolfenstein

Return to Castle Wolfenstein

2001  First-person shooter - GNU/Linux Mac OS X Xbox Microsoft Windows Sony PlayStation 2
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!
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Return to Castle Wolfenstein - Wikipedia 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 ...   more on Wikipedia