Super Mario World on PC: smw reimplementation

smw, by developer snesrev, is a reverse-engineered reimplementation of Super Mario World. According to the project, it reimplements all parts of the original game and several mods made with Lunar Magic, and it can be played from start to end. It uses the PPU and DSP implementations from LakeSnes, with many speed optimizations.

You need a copy of your ROM to extract the assets (levels and images); once done, the ROM is no longer needed. GigaROM hosts neither the project nor the game: the download is the official repository.

• 64-bit Windows (the easy method in the README); other platforms have a build guide in the repository.
• Python, TCC and SDL2 (the README says where to get them).
• Your own US ROM named smw.sfc.

1. Install Python with “Add to PATH” and download the repository ZIP (“Go to official project” button).
2. Put your smw.sfc ROM in that folder and extract TCC and SDL2 into third-party.
3. Double-click extract_assets.bat to create smw_assets.dat.
4. Double-click run_with_tcc.bat: it creates smw.exe and starts the game. Settings are in smw.ini.

• For now you have to build it yourself.
• While you play it runs an emulated version in the background and compares memory every frame; if it finds a mismatch it saves a snapshot in saves/ and shows a countdown.
• The repository’s license is not a standard one: check the license file.

If your computer does not meet the requirements, you do not have the exact version the port asks for, or you prefer the classic route, you can play the original with a console emulator: see emulators and its install and setup guide.