3D games usually make use of three-dimensional geometry, with Materials and Textures rendered on the surface of GameObjects to make them appear as solid environments, characters and objects that make up the game world.

As of April 2024, Call of Duty has sold over 400 million copies. The series is verified by the Guinness World Records as the best-selling first-person shooter game series. It is also the most successful video game franchise created in the United States and the fourth best-selling video game franchise of all time.