This return to World War II ended up influencing the game’s successors.
In a way, World at War reminds Call of Duty of its roots.
However, World at War is arguably just as important, with its campaign being one of the reasons why Call of Duty games were always about war, but the older games from the PlayStation 2 and original Xbox era were specifically about actual historical events, most notably World War 2. The first two Modern Warfare games are often lauded for the innovations they brought to the Call of Duty franchise, and first-person shooters as a whole.
