The zombies had to came up with a new method to zombify humans now that the humans fortified theirselves inside big walls.
Launch the zombies with a big catapult over the wall and watch the zombie mayem unfold.
Use the mouse cursor to aim and shoot a zombie.
Buy upgrades and evil gadgets with your points inside the evil lab.
Click on the 4 zombie buttons at the bottom to use attachable items (must be purchased from item shop first)