Cheat Mode
Enter cheater as a name to enable cheat mode. Then, press one of the following keys during game play to activate the corresponding cheat function. Note: The codes may also work in earlier versions that allow you to enter a name.
Effect - Key
Invincibility - I
Disable invincibility - U
Set power level 1-9 - 1 to 9
Level skip - N
Previous level - P