Exclusively available for Xbox 360 for the next 21 days, the map pack includes “Broadcast,” which features tight corridors and wide open parking lots where large groups utilize close-quarter fighting and strategic maneuvers; “Chinatown” where night battles well lit by the full moon play havoc against a backdrop of brightly colored lamps, antique shops and neon signs of the local district; “Killhouse,” a desolate warehouse under enemy attack where squads will need to move through building mock-ups and plywood walls in order to full take control of the combat arena; and “Creek,” A large wide open village in a heavily wooded area where battles are fought between high ridgelines and deep in underground caves.

To celebrate the launch of the Call of Duty 4: Modern Warfare Game of the Year Edition and the Variety Map Pack, Xbox LIVE will host a Double XP Weekend. Starting on Friday, April 4 through Sunday, April 6, players can earn twice as many experience points as they play the new maps on the Variety Map Pack specific playlists.