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.

Building on the Call of Duty4: Modern Warfare engine, Call of Duty: World at War thrusts players into the ruthless and gritty chaos of WWII combat and challenges them to band together to survive the most harrowing and climactic battles in both the European and Pacific theaters.