Tom Clancy SSN offers a real-time 3D rendering engine designed to deliver a cinematic submarine combat game. Fifteen missions include briefings, full-motion news segments, mission briefings, and maps. An included technical reference guide gives detailed information on all submarines, ships, and weapons in the game. Players will take command of a Los Angeles-class nuclear submarine, the USS Cheyenne, and her crew of 133 submariners. ~ All Game Guide