Evolve is a co-operative first-person shooter developed by Turtle Rock Studios and published by 2K Games for Microsoft Windows, PlayStation 4, and Xbox One. The game focuses on multiplayer action with four players taking on the role of humans who hunt down a player-controlled aliens that Evolves as the game progresses.

Left 4 Dead 2 is a shooter game developed by Turtle Rock Studios, Valve Corporation and released on Mac OS, Microsoft Windows, Xbox 360.

Left 4 dead is a first person shooter game, with one simple objective, survive! You and 3 others (ai or human) must fight the undead while trying to escape, make it to the safe house and youve fought to live another day. die and you join the undead and there relentless quest for brains!

Counter-Strike: Condition Zero is a first-person shooting game developed by Rogue Entertainment, Gearbox Software, Ritual Entertainment, and Turtle Rock Studios under Valve Corporation's management for Microsoft Windows and Mac OS. It is a follow-up to the Half-Life mod, Counter-Strike and features a multiplayer mode and single-player mission pack.

Counter-Strike is an online first-person shooter game developed by Valve Software for the Microsoft Windows, Mac OS, and Xbox. Originally a mod for Half-Life by Minh "Gooseman" Le and Jess Cliffe, Valve eventually began to help in its development and bough the rights to it in 2000.