Make sure Adobe Flash Player is enabled. All the games work, but some may take up to 30 to 40 seconds to load because of large size. Have Patience!
In the Zombocalypse Unblocked game, your job is to kill as many zombies as possible. Move with left and right arrow keys, and hit the space key. When a crate is fall in contain a power-up, gun etc. Go close to crate and press down arrow key to pick. Then start pressing Space key again to use that gun. You should also play the new version Zombocalypse 2.