Here is a full ROM hack for Super Mario World which was entered for the C3 contest on the SMWCentral site.
Length: 87 exit(s)
Difficulty: Normal
Story:
Help Me Mario!
I am trapped in Bowser's Castle.
Bowser is even more dangerous this time.
He has hire his troops and this time Bowser has been helped by Captain K. Rool. He has sent his powerful enemies against you Mario!
Can Mario save the Princess and defeat Bowser and his army?
Good Luck & Have Fun!!!!!!!!!!!!
Super Mario World (USA).sfc - NOINTRO
CRC32: B19ED489
MD5: CDD3C8C37322978CA8669B34BC89C804
SHA-1: 6B47BB75D16514B6A476AA0C73A683A2A4C18765
SHA-256: 0838E531FE22C077528FEBE14CB3FF7C492F1F5FA8DE354192BDFF7137C27F5B