depends when you open the mystery box
No the newest are always designed to be better than the older games as far as difficultly goes
Black Ops does have zombies
yes just go to zombies than splitscreen
Yes, zombies are back in Black ops.
black ops zombies just continues after world at war
yes it has zombies the maps are called house facility temple and overlook it is significantly harder than the main console versions due to no wonder weapons and zombies kill in one hit and take longer to kill
Because black ops is made by treyarch and they made world at war zombies
yes there are zombies in call of the duty black ops
No. There are no Zombies in Black Ops: Declassified. Sorry.
Yes
Not Possible. You play until you die or the game will just get harder