Activision and Treyarch have announced that the Call of Duty: World at War Map Pack 1 reached one million downloads during its first weekend of availability (March 19-22) on Xbox LIVE and the PlayStation Network. Call of Duty: World at War Map Pack 1 includes four new maps: Nightfire, Station, Knee Deep and Verruckt, It also features the four-player co-op Nazi Zombie mode with "Verrückt" (Zombie Asylum).