Left 4 Dead (Xbox 360)

Addictive co-op action gameplay from the makers of Counter-Strike and Half-Life Advanced artificial intelligence drives both friendly and unfriendly creatures to dynamically create intense single-player, co-op, and multiplayer experiences every time the game is played 20 new maps. 10 new weapons. Four sprawling campaigns. Match making, stats, rankings, and awards system drive collaborative play Designer's Commentary mode allows gamers to go "behind the scenes" of the game. Powered by Source and Steam., Platforms: Xbox 360