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  • You now need to load up your own ROM to be able to play the browser-based port of Super Mario 64.

Summary

  • Super Mario 64 is running entirely in a browser (even on mobile), and every level is playable.
  • The multiplayer mode supports up to 12 players and features live in-game voice and video chat.
  • The port builds on sm64ex/sm64coopdx with AI help; it also includes odd mods like a machine gun and extra playable characters.

Oliver Sauter (@olivers_tools) has ported Nintendo 64 classic Super Mario 64 to any web browser, complete with multiplayer that supports up to 12 players. If you showed me this latest old-school game port in 1996 when I was 6 years old, I think my mind would have been absolutely blown.

According to the port's creator, the entire game runs in a browser (even on mobile), including every level, and on the multiplayer side, players can play through all the game's iconic stages together. Of course, like many recent retro game ports, Sauter's project was created with the help of AI. Sauter also says that they also integrated sm64coopdx, a Super Mario 64 co-op mod, into the browser port.

It's important to note that the browser port is based on sm64ex, a fork of sm64-port, so it's far from an entirely original project.

The port's multiplayer mode even includes in-game voice and video chat

Go fight a very blocky-looking Bowser with a few friends

When you boot up the Super Mario 64 browser port, you can jump into single-player or multiplayer. If you opt for multiplayer, you can play from the start with all levels open and accessible, or play the classic version of Super Mario 64, where you need to collect stars to unlock stages.

I can see the former option being fun if you just want to mess around with friends in a stage like Cool, Cool Mountain. Maybe you could get some pals together and co-operatively throw some baby penguins off an icy ledge?

Super Mario 64 running a browser Credit: Oliver Sauter

Playable characters include Mario, Luigi, Toad, Wario, Yoshi, Donkey Kong, and Bowser Jr. The multiplayer version of the browser port also features a few odd mods, including the ability to shoot a machine gun, alongside integrated voice and video chat. I didn't spend much time playing this browser-based version of Super Mario 64, but in the 20 minutes or so I did play, it ran surprisingly smoothly.

While I'd rather play a native PC decompilation of Super Mario 64 like Render96, it's still pretty cool that a browser port like this is even possible.

UPDATE: 2026/10/10 12:55 EST BY PATRICK O'ROURKE

You now need to load up your own ROM to be able to play the browser-based port of Super Mario 64.