A hack that's St. Patrick's Day themed. This is not the first hack with this theme,
https://www.smwcentral.net/?p=viewthread&t=31055.
Also, it's harder than the author's other hacks!
Story: Mouser has stolen the Leprechauns' precious pot of gold! Without it, St. Patrick's Day will no longer exist! Mario must defeat Mouser and save the holiday!
Super Mario World (USA) - NOINTRO
CRC32: B19ED489
MD5: CDD3C8C37322978CA8669B34BC89C804
SHA-1: 6B47BB75D16514B6A476AA0C73A683A2A4C18765
SHA-256: 0838E531FE22C077528FEBE14CB3FF7C492F1F5FA8DE354192BDFF7137C27F5B