by beating the game
Beat theCampaign
complete the campaign then you will unlock it
by beating the game
You can't simpley unlock them, you have to buy them.
No, but when you beat the campaign on World at War, you do unlock zombies mode. You also unlock the map "Five" on Black Ops for completing the campaign, unless you use the terminal in the main menu room.
yes, you just have to beat the game.
If you mean for the Nintendo DS they had no Zombie Maps
If you have a wii, it is impossible. The game was made without it.
iam pretty sure u can
there is none the wii does not support nazi zomies AI
you cant why would u think that u could
I'm pretty sure that you just have to beat the game to get it