Aliens are more advanced then us if they came to earth but if they found out to late that the only way to kill them is to shoot them in Head then it is a fair fight.
Chat with our AI personalities
There is no end to the Zombies rounds so there can not be a highest round. The rounds or levels keep coming until you die. Zombies (also and originally known as Nazi Zombies) is a survival-type game mode. {see related link Zombies (mode)} That means you can not win and just try to see how long you can survive.
It doesn't really have one, I would say 12+ because it has blood and Zombies.
you can't officially "Win" but you can get to as high a level as possible, to achieve a "high score". A good way to do this is to make it to the 'Random box' location and get a good weapon. After you do that move toward the rocket launch area? were the pack a punch machine is and upgrade your good weapon. This will insure many rounds of survival :D have fun killin zombies... haha.
There are unlimited zombies.
"Zombie Mode" or Nazi Zombies can't be beaten it is as simple as that.No matter what you do you WILL be overrun by Zombies and eaten, the aim of the game is to last as long as possible and go down fighting.But there are glitches where you can survive and the zombies cant get you, then they start dieing off. It takes about 24 hours to get to lvl 100, and maybe if you leave the game of for a month or so you could win.