How many Zombie maps are there in Call Of Duty: Black Ops 1?
Solution 1:
Zombies mode in Black Ops features the maps
"Kino Der Toten". (Unlocked immediately)
Upon completion of the Campaign, or typing in "3ARC UNLOCK" on the Computer Console in the Main Menu, the map "Five" would be unlocked.
Also, typing in either "DOA" or "3ARC UNLOCK" on the Computer Console would unlock the map "Dead Ops Arcade".
More maps may be purchased via Downloadable Content (DLC) or pre-ordering the Hardened/Prestige Editions.
The Hardened and Prestige Edition include the four revamped versions of "Nacht Der Untoten", "Verruct", "Shi No Numa", and "Der Riese".
First Strike includes "Ascension"
Escalation includes "Call of the Dead"
Annihilation includes "Shangri-La"
and Rezurrection includes "Moon" and the revamped versions of "Nacht Der Untoten", "Verrückt", "Shi No Numa", and "Der Riese".
A total of 12 maps (unless Rezurrections revamped maps are different than the other revamps making it 16 maps)
Wiki