Gubble Cheat Codes
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Type GUBBLEDCHEAT at the title screen to activate the codes.

From anywhere on a map, press:
F3      Removes all blocks from the map
F9      Warps you to the next city map

From a launch pad on a map, press:
Page Up         Warps you to the next level
Page Down       Returns you to the previous level
Home    Advances you 10 levels
End     Takes you back 10 levels

During play, press:
F8      Toggles invincibility
F9      Complete any level
+       Speeds you up
-       Slows you down