Elevates the Call of Duty social gaming experience by delivering a campaign with the ability to play cooperatively with up to four players online Treyarch premieres a new momentum-based chained-movement system Allows players to fluidly move through the environment with finesse Designed for co-op and re-playability, players encounter all the epic cinematic gameplay moments The biggest zombies experience to date features three different ways to survive the zombie apocalypse. Unravel the mysteries of a dying earth in tranzit, fight endless waves of zombies in survival mode, or compete in the new 4z4 last-human-standing mode grief