Call of Duty: Modern Warfare 2 and Warzone are specifically targeted at mature audiences. Both games depict gunshot wounds, dismemberment, and exposed viscera. The in-game dialogue regularly includes profanity. Some levels include elements such as mutilated corpses and drug paraphernalia.

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.