Ok well this isnt really a cheat or a glitch, it's just something fun and kinda challenging to do in the game. Not many people know this but ok check it out, in the Spooky level and Greg chapter, after opening the giant Cemetery doors, enter the cool creepy place. As you know after killing 12 zombies Greg appears and if you talk to him youve pleased him and he lets you proceed. However if you don't talk to him the zombies KEEP coming and coming. And the more you kill the more and more they rise out of the ground. If you get cornered jump on top of a grave stone and they can't get you. But to see how long you or a friend can last without jumping on top of a grave stone, can be pretty fun. Try it people it's fun.
Added by: NanDo25 Jul 11th 2011, ID#8091