Fallout 3's first piece of DLC is now available for Xbox and PC through Live Marketplace. Operation: Anchorage takes you through the Battle of Anchorage. In it you will have the opportunity to travel back in time to before the bombs dropped to help fend off the invading Chinese army.

Weighing in at 800 Microsoft Points, Operation: Anchorage, adds a raft of new characters, weapons and achievements as well as a brand new main quest. Operation: Anchorage is available exclusively on 360 and PC.