Dead Ops Arcade is a hidden game mode/map in Call of Duty: Black Ops. It is the third Zombies map in Call of Duty: Black Ops. It is unlocked by typing “DOA” into the CIA computer (this just unlocks Dead Ops and nothing else), or by entering “3ARC UNLOCK” (this will unlock “Five” and all campaign levels as well). Upon first entering the game, the Insert Coinachievement/trophy is unlocked.
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