Which Call of Duty game introduced the popular "Zombies" game mode?
Call of Duty: World at War
Call of Duty 4: Modern Warfare
Call of Duty: Black Ops
Call of Duty: Modern Warfare 2
Answer
Call of Duty: World at War, developed by Treyarch, introduced the popular "Zombies" game mode in 2008. This mode has since become a staple in many Call of Duty games.
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