Enter bugcheats at the menu to enable cheat mode. Then, enter allworld to unlock all worlds. Also, enter one of the following codes during game play to drop a bonus item that will activate the corresponding cheat.

Effect	Code
Slow enemies	slowbug
Super speed	turbomode
Additional life	addlife
Additional points	addscore
Additional fuel	addfuel
Activate shield	shield
Level skip	nextlevel
Alternate view	retro
Thunderbolt	flash
Call to Superhero	call