Counter Strike Online is a great clone of one of the world's most popular first-person shooter games ever made, and you can enjoy it online and free. Counter Strike was built in 2000 and includes the fight between terrorists and counter-terrorist forces. In this game, all you have to do is join a room full of other players, choose which team you want to fight, and start the battle to lead your side to victory after time is up. Have fun playing this free CS Online game!