What is the password to unlock all zombie maps in black ops?

There is no magic passWord, maps are based on your game version purchased and whether you purchased the map pack. Five can be unlocked so can Dead Ops Arcade (DOA) and Kinder der Toten was unlocked. Ascension is purchased with First Strike.for $15 Call of the Dead is purchased with Escalation. Nacht der Untoten, Verruckt, Shi No Numa, & Der Riese are only available with the Hardened or Prestige PS3 and Xbox 360 editions and there is no information they are going to be released in a DLC for the standard editions. Maps packs are not for the Nintendo Games and neither are the WAW maps