Call of Duty: Ghosts is a first-person shooter set in a near-future scenario where the United States has been devastated by an orbital weapons strike. The single-player campaign follows Logan Walker, a soldier fighting alongside an elite special operations unit called the Ghosts against the Federation of the Americas, a South American military superpower. Multiplayer introduces destructible map elements, new game modes such as Cranked and Blitz, and a Squads mode with AI-controlled teammates. The game also features Extinction, a four-player cooperative mode where players fight waves of alien creatures called Cryptids.