Tip: Remaking levels from other Mario games is strongly discouraged, especially popular ones (World 1-1 from SMB or SMB3, for example), as their over-presence in Mario games, official or not, often makes them uninteresting to play.
This is not a tool, but a Super Mario World ROM file. Commercial ROMs are stricitly prohibited on SMW Central as they contain copyrighted content. Do not upload them to the site under any circumstances.
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