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.
If you're looking for a game that shows off the brutality of World War 1 without having to play an FPS, then The Great War: Western Front just might be your game. Created by the makers of Command & Conquer, The Great War: Western Front is a strategy game that creates a real-time tactical experience.