For a lot of maps you have to get to or past a certain round in a certain map.
For the newest maps like Moon, you have to buy the Resurrection pack. It`s for sale at GameStop for about 14 bucks
You do not unlock maps that you have not paid for a maps pack for. Those maps that must be purchased first are everything except Kino Der Toten, "Five", Dead Ops Arcade. Only "Fiveand Dead Ops Arcade can be unlocked for the PS3 PC and Xbox 360 Platforms
First Strike map pack includes Ascension.
Escalation map pack has Call of th Dead
Annihilation map pack has Shangri-La
Rezurrection Map pack has Moon It also includes the 4 WAW Zombie Maps Nacht der Untoten, Verrückt, Shi No Numa, & Der Riese that have been modified for Black Ops and were also available in Hardened and Prestige Editions of Black Ops
None of the map packs are available for Nintendo Wii and they all cost $15 each
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3arc unlock - To unlock the nazi zombies map "five".3arc Intel - To unlock all enemy Intel. WARNING DISABLES ONE ACHIEVEMENT.
No. All you get is new custom class slots, until you get to the really high prestiges.
you kill all the zombies genuis!!
Go to the computer in the main menu and type in 3ARC UNLOCK to get "Five" and "Dead Ops Arcade" you have to buy prestige or hardened maps to unlock even more maps.
It is a Nazi Zombies Perk-A-Cola that allows you to have three guns rather than two. It was introduced first on Moon, but was brought to all the maps in an update.