The first 6 games are about World War II, but the series began branching out beginning with Modern Warfare. The series now spans World War II, the Cold War, the present, the near future, and the far future. The Modern Warfare series takes place in present times and is developed by Infinity Ward.

Call of Duty: World at War is a 2008 first-person shooter game developed by Treyarch and published by Activision. It is the fifth main installment of the Call of Duty series and is the fourth entry in the series to be set during World War II.