Shoot the zombie hats! Drink The slushies! Save the survivors in this top-down shoot-em-up.
The wall hack is unreliable, and you can doom yourself with it. But if you want to know how, you just walk up to unbought area's gate, and wait until zombies swarm you, and then they'll hit you into the next zone through the wall. But sometimes, you'll just die, and it has to be alot of zombies surrounding you. If its a little, then you'll just move, and the zombies will stop moving if you're in an unbought area. You have to buy it to leave, and kill the rest, but you can use the glitch to heal away from the zombies.