Counter-Strike: Source

Counter-Strike Source is a remake of Counter-Strike using the Source game engine. As in the original, Counter-Strike Source pits a team of counter-terrorists against a team of terrorists in a series of rounds. Each round is won either by completing an objective or by eliminating all members of the enemy team

Counter-Strike: GO

Counter-Strike Global Offensive is a multiplayer first-person shooter video game developed by Hidden Path Entertainment and Valve Corporation