PC version Fans have made a PC version. Some are still early, so read the project page first.
Fans took Super Mario Advance 2: Super Mario World apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here are the 2 projects we know about:
Static recompilation of Super Mario Advance 2: Super Mario World · Part of the R.A.I.D. community
Disassembly of Super Mario Advance 2