CHEAT CODES (from the review)
Are there any cheat codes?
Yes, but I've never used them:
Fight the Bosses
At the Configuration screen, put the level on Hard, the music to 01, and
the
sound to 01. Now hold down Select and press I. The exit selection will
change to Boss. (You can still change the settings now.)
Give yourself 10,000 in crystals.
At the Configuration screen, put the level on Super, the music to 02, and
the sound to 02. Now hold down Select and press I. Go ahead, it won't help
you much.