It's only been on shelves for a handful of hours but already one of Call of Duty: Black Ops most intriguing secrets has been unearthed with the discovery of Dead Ops Arcade, a twin-stick retro shooter that's hidden within the game's menus.
Dead Ops Arcade is accessed from the start menu – players simply have to wrestle free from their restraints then mosy along to a computer terminal and input CD and then DOA on its in-game keyboard.
Cool of them to include a hidden mode. Though it certainly didn't take long for people to figure it out.
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