Counter-Strike: Source is a PC game developed by Valve Corporation. It is a remake and an update of an older game, Counter-Strike 1.6 is a modification of Half-Life and is a single player shooter. Like the original game Counter-Strike: Source puts face a team of terrorists and a police special forces in a series of rounds. Each round is won either by accomplishing the mission (such as detonating a bomb or rescuing hostages) or by eliminating the opposing team members. Unlike Half-Life: Source, Counter-Strike: Source is a complete remake using Valve source engine.