Super Metroid

About

From snesrev's sm, a from-scratch C reimplementation of Super Metroid's SNES engine, compiled to WebAssembly with no SNES emulator involved. Drop in your own ROM; progress saves in the browser.

The Space Pirates, merciless agents of the evil Mother Brain, have stolen the last Metroid from a research station, and once again Mother Brain threatens the safety of the galaxy! Samus Aran must don her awesome array of high-tech weaponry to retrieve the deadly Metroid hidden deep within the cave-riddled planet Zebes. Super Metroid features excellent graphics, with a huge variety of enemies and worlds to explore. The side-view action will be familiar to many players, only now there are new weapons and items, including the Grappling Beam, which allows Samus to swing across large chasms, and the X-Ray Scope, which reveals secret passages.

Description from IGDB.

How it runs

Project

smReimplementation. A new engine written from scratch that runs the original game's data.By snesrev

Port

andrewnakas.github.ioBy Andrew Nakas · WebAssemblyOnline since Oct 5, 2026Source: andrewnakas/supermetroid-web

Controls

Arrows to move, A to jump, Z to dash, S to shoot, Enter to start.

Plays with

Keyboard. Saves in your browser.

You need

Bring your Super Metroid SNES ROM (Japan/USA, 3 MiB): the port runs it, it does not ship it.

Original

Nintendo R&D1, 1994, SNES