Even though Call of Duty: Black Ops, from Activision and Treyarch Studios, is one of the few video games that is well-worth the price of admission, the developers decided to add in a little something extra; accessible only by climbing out of your chair in the menu screen and typing a few words into the on-screen computer. Our favorite of the Easter Eggs has to be the Dead Ops Arcade mode, which features a top-down view of Zombie-killing madness (think Smash TV); another is the fan-favorite adventure game Zork. Instructions on how-to unlock Dead Ops Arcade are written below or you can watch the embedded YouTube video for a detailed walk through (the rest of the hidden eggs are up to you to figure out - or via a quick Google search). One thing we will say is that the normal co-op zombies mode, included with every copy of Call of Duty: Black Ops, features four Presidents who are protecting the White House from an overrun of the undead (screenshots below).
How to Unlock Dead Ops Arcade in Call of Duty: Black Ops: Getting to the terminal is easy: while you're sitting in the chair in the main menu, hit the left and right triggers on your controller a few times. L, R, L, R, L, R, L, R, L, R! From there, the only thing to do is to head to the back of the room and find the small terminal computer. Typing in the DOA command (and then pressing enter) unlocks Dead Ops Arcade (located in the main Zombies menu once unlocked); entering the command ZORK launches the classic text adventure, Zork.
About: Prepare for the follow-up to the biggest entertainment launch in history: on November 9th Call of Duty: Black Ops will introduce fans to the elite world of Black Ops. Activision Publishing, Inc. and award-winning developer Treyarch will take players behind enemy lines in an entirely new chapter in the groundbreaking and record-setting, No. 1 first-person action series of all-time.