Modern Warfare Zombies continues the open-world approach to Call of Duty Zombies introduced in Black Ops: Cold War. Following the story set-up in Cold War's Outbreak mode and massively expanding on the game, players will have to deal with a new enemy while surviving the hordes, an enemy mercenary force known as Terminus Outcomes. Players will encounter several new objectives in the Zombies mission area, including Encampments, Strongholds, and a Fortress that will reward players with bonus experience and valuable loot if they are able to clear out the occupying zombies or mercenaries.