Initially, it started with the id Tech 3 engine for the early games but recent titles like Call of Duty: Modern Warfare (2024) and Call of Duty: Warzone have been developed using a heavily modified version of the IW engine, known as the IW 8.0.
The Call of Duty games are on the Gamecube, Xbox, PlayStation, PlayStation 2, PlayStation 3, PlayStation Vita, PlayStation 4, PlayStation 5, Xbox 360, Xbox One, Xbox Series X, Xbox Series S, PC, Nintendo Wii, Wii U, and the Nintendo DS.