I wanted some plot, so I thought of something simple he could quest for.
NOTE: There are two other levels on the overworld. These are meant to signify that you beat the game/found the secret exit, and are not meant to be judged.
Enjoy, and best of luck to all of us here!
Wow, last minute update to fix a glitch in the intro message! Magikoopa's Fun House (V3).
(Can't believe I didn't spot that before, and even though the intro message wouldn't be judged, leaving it like that would've still bugged me.)