Endless
There is a zombies mode for Call of Duty Black Ops, consisting of 3 different levels (one being the Ascension that you purchase with Microsoft points), and an arcade game known as Dead Ops, a zombie shooter that's based on arcade-type gameplay.
Dead ops is just and arcade version of zombies without barriers or a myestery box.
There are 5-10 stages in Plants vs. zombies
Enfinaty
only 2
DOA (Dead Ops Arcade) to get an arcade - 4 player - version of zombies
Normally in the 2 first levels of plants vs. zombies the zombies are the newspaper zombie, zombie and zombies that are in costumes are in those levels.
There are no zombies in CoD4, if you mean Arcade, then I'm not sure...
Unlimited
there is unlimited you go on till u die
100 20 10 30
They do not end until you die