Less than a day after it went on sale, players have already found an intriguing secret mode in Call of Duty: Black Ops. For anyone who loves retro shooters in the vein of Super Smash TV, this is a must-know secret. This hidden mode, dubbed “Dead Ops Arcade” has a top-down view, tons of different power-ups and weapons and of course hoards of enemies. In order to unlock Dead Ops Arcade, you need to break free of your restraints on the start menu by looking down and then pressing the triggers until you’re free. Once you’re free, get up and find the computer terminal and enter “DOA” (no quotation marks) on the keyboard that appears. After that you’ll be transported right into the game! Watch the video below to get a peak at the action, or if you’re having trouble unlocking the mode.