Counter-Strike Alternatives, Similar

Counter-Strike (CS) is a series of multiplayer first-person shooter video games, in which teams of terrorists battle to perpetrate an act of terror (bombing, hostage-taking, assassination) and counter-terrorists try to prevent it (bomb defusal, hostage rescue). The series began on Windows in 1999 with the first game, Counter-Strike. It was initially released as a modification ("mod") for Half-Life and designed by Minh "Gooseman" Le and Jess "Cliffe" Cliffe before the rights to the game's intellectual property were acquired by Valve Corporation, the developers of Half-Life. … More Info »The series includes: Counter-Strike (1999)
Counter-Strike: Condition Zero (2004)
Counter-Strike: Source (2004)
Counter-Strike: Global Offensive (2012)