World at War (2008)\n\n The fifth Call of Duty installment, World at War, was the official introduction 💱 to the famous Zombies mode. This is where Nazi zombies originally came from. World at War's Zombies were not campy, 💱 and just genuinely terrifying.

Call of Duty's staple game mode, Zombies, was initially a fun game mode, with no 💱 future in sight. That was until the credits rolled for gamers in Call of Duty: World at War, and fans 💱 were introduced to the zombie horde.