Call of Duty: Modern Warfare III is now available globally for Xbox with a new Campaign, amazing Multiplayer, and a new open world Zombies experience that is sure to take a bite out of our lives.

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.

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Raven Software is an American video game developer based in Madison, Wisconsin.