http://fusoya.eludevisibility.org/lm/index.html
All you need is a ROM of Super Mario World and an emulator to play your levels. I'm not 100% sure how it works as I'm still getting used to it myself. I've seen what you can make with it, and its nothing but sheer awesome.
Example of level:
[youtube=425,350]qB5c8PsGCuM[/youtube]
Example of awesome:
[youtube=425,350]lsd96jy3GWY[/youtube]
Welcome to 10 years ago.
Population: Holk and Me!
I, arlen;
Population: Holk and I :police:
Go do math or something. :mad:
To not be a complete asshole to Revo, this is the best place to go to for Super Mario World hacks: http://www.smwcentral.net/
Just for the record, I knew this was old, but it's a neat program and I didn't see anything here for it.
Stencyl can do this so much better :mad: