Call of Duty: Modern Warfare 3 introduces the largest cooperative zombies experience in a Call of Duty game to date, with up to 24 players deploying in multiple squads to the same mission area. While often operating independently of each other, Modern Warfare Zombies is a cooperative game mode at its heart, allowing players to help others who are not squad members with supplies, field upgrade effects, and even revives. While the maximum team size on deployment is capped at 3, players can further squad up in the game to a maximum of six players per squad.