checked-no =>Baby Robo: To use Baby Robo in the main game, play every minigame at least once, making sure your minigame stats are saved after you've played them all. To choose Baby Robo, on the character select screen highlight Baby and press [1]. =>View Credits: Complete the first world to unlock the Staff Credits option in the Options menu. =>Final Worlds: To unlock world 9, complete worlds 1-8 without using a continue. Finish world 9 without a continue to unlock world 10.