Play as Mometsuto:
Successfully complete the game to unlock Mometsuto as a playable character.

Boss battle:
Successfully complete the fairground levels to unlock a new area that allows you to battle previously defeated Bosses.

Bonus levels:
Collect all six stars in a level to get a Momett doll. A bonus level will be unlocked after you have accumulated eight and sixteen dolls.

Picture gallery:
Successfully complete the fairground levels to unlock an option for a picture gallery. Collect all 150 gems in a level to unlock its pictures in the gallery.

Music test:
Complete the either bonus level to unlock songs in the music box option.

Vision select:
Successfully complete the game and save. Start another game, then press R1 to display the status screen. You can now select any level by using the "Vision Selector" option.