U have always been a zombie freak. Zombie movies, zombie costumes, zombie parties, zombie anything. You even prepared for a zombie apocalypse... something all ur friends laughed at. Building that bunker in case of a zombie plague might have seemed insane to all ur friends... but u knew that ONE DAY the zombies would rise up and take the earth - U KNEW IT WOULD HAPPEN. Guess what it happened... all ur friends that laughed at u now have their brains eaten. ALL OF THEM. The last laugh is yours... or so it seems. Well it will be yours if u can defend yourself from the zombies that want to move into ur bunker.
Ur objective is to defend, upgrade and then defend ur bunker some more. Get better weapons, kill more zombies, get cash and upgrade like crazy. Survive for the sake of all humanity. Ur the last one left.
Good luck stopping the zombie apocalypse in this defense game!