Cheat Mode
To enable cheat mode type GUBBLEDCHEAT at the title screen. Gubble D. Gleep will laugh to verify correct code entry. Enter one of the following actions to enable the corresponding effect.
[F3] from anywhere on a map - Remove all blocks from map
[F9] from anywhere on a map - Skip to next city map
[Page Up] from a launch pad on a map - Level skip
[Page Down] from a launch pad on a map - Return to previous level
[Home] from a launch pad on a map - Skip ten levels
[End] from a launch pad on a map - Jump back ten levels
[F8] during game play - Toggle invincibility
[F9] during game play - Complete current level
[Plus] during game play - Speed up
[Minus] during game play - Slow down