There is no highest level on nazi zombies the amount of levels you can get to is unlimited
You can go until round 100, which has endless zombies. Round 100 never ends.
Call of Duty world at war Zombies on iPhone
abviously kill all the zombies
The zombie level in CoD5 is an extra level, after you finish the game. You access the game by going to the level select, on the single player menu.
No.
I'm pretty sure that you just have to beat the game to get it
Call of Duty Modern Warfare 2 does not have zombies.
It means that player is on the pause menu.
Asention
no, the oldest game in the call of duty series with zombies is World at War.
2456 is the highest level reach so far but there are highest levels for all the maps