Tip: Make sure that ALL exit-enabled pipes, doors, etc. lead somewhere, or else they'll take you to level 0 (the "endless" bonus game).
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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.