Drop your Super Mario World (USA) ROM here (or click to pick)
The ROM never leaves this page: the engine (WebAssembly) verifies it,
extracts the assets in your browser, and caches them in local storage —
next visit boots straight into the game. A private copy of the ROM stays
in your browser's local storage too, so engine updates that need fresh
extractions never ask for it again. This repository ships no Nintendo
data; everything comes from the ROM you already own.
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Wup
Aleft
Sdown
Dright
Jrun
Kjump
Lspin
engine build … · Q/E L/R Enter Start Shift Select — any keypress during a TAS run takes over live