Tip: The music in SMW's default castle/ghost house intros and boss battles can be changed by hex editing. See $0584DB and $0584E2 in the ROM map.
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Super Mario World Hacks
Welcome to the hack archive of SMW Central. The BPS patches in the ZIPs are the hacks; to play the hacks, apply the patches to a clean, American Super Mario World ROM using Floating IPS. We do not provide ROMs here, nor do we link to them. For more information, see our FAQ or the forums.