this game is where you get to pick to be either a zombie or a human, whatever one you don't pick will be your enemy, your goal is to destroy them while there goal is to destroy you, if they destroy you you have to restart that level until you complete it, in total there are 40 levels and each level gets harder as you go on, the only way to get to the next level is by defeating your enemies, if you reach level 40 and complete it you've beaten the game