During the game, press ESC to bring up the pop-up menu. Type glazed donut to enable cheats. Now you can use the following cheat keys:

F3     		Go back one level
F4    		Advance one level
AltF12 		Gain five lives
Alt 8  		Ten bombs of each type
Alt B  		"Cloak" power up
Alt I  		"Inviso'power up
Alt K  		"Beach Ball" power up
Alt T  		"Morph" power up 

Thanks to Revolution readers Cashdaddy101 and MagicMaker!