Counter-Strike: Source

Counter-Strike: Source is a team-based tactical first-person shooter and a remake of the original Counter-Strike built on Valve's Source engine. A team of Counter-Terrorists faces a team of Terrorists across a series of rounds, each won by completing an objective such as defusing a bomb or rescuing hostages, or by eliminating the opposing team. Eliminated players do not respawn until the next round, and moving while firing reduces accuracy, encouraging careful positioning.