OK everyone supposing you have black ops you must have played zombies and noticed you only have one map which is kind der untoten now i will show you how to get all of the maps the first is already unlocked the second one is unlocked after beating campaign its called pentagon and here is the final map its called deadops arcade and its awesome first at the main menu push you analog stick down so you see your wrists and then press the aim down sight and shoot button as fast as you can and you will stand up!!!! now walk around to the computer terminal in the back activate it now it will ask you for a password which is RUSALKA next type in CD and then DOA boom deadops arcade plus rep if it works pm if it doesn't ill give a tutorial sorry if i spelled pass wrong p.s deadops is not regular zombies but its fun and innovative plus there's a gorilla in a space suit.