Bug! Cheat Menu
Choose the HELP menu, then select ABOUT. Hold Shift and click on Bug's pupil. A white box will appear. Type "babyseals", then click on WOW. A new blank menu will appear next to the HELP menu. This menu includes level select, invincibility and more!
Bug! Cheat: Flying Bug
Activate the Cheat Menu, then select the Flying Bug option. To use it, press and hold Y while playing.
Bug! Cheat: Level Skip
Activate the Cheat Menu. To skip to the next level while playing, hold the Duck button and press Up.
Bug! Cheat: Level Skip Backwards
Hold the Duck button and press DOWN to return to the previous level. If you are already on the first level you will be sent to the bonus level.
Bug! Hint: Kill Sonic
Go to Reptilia. Use the flying bug cheat and fly around until you find rocks made into the shape of the word GO. Go to the very beginning of the word and there should be a track in front of it with Sonic standing on it.