Marcel Winatschek

Breaking Mario World

This is what happens when a speedrunner stops running and starts breaking. Masterjun takes Super Mario World—the SNES classic that worked fine, thank you—and glitches it so completely that it stops being a platformer. He uses a TAS, a tool-assisted speedrun built frame by frame with surgical precision, to manipulate the game’s memory into executing his own code. Suddenly Mario World is running Pong and Snake, fed through the console’s controller ports. The game’s not playing itself anymore. It’s just hosting whatever Masterjun puts inside it.

What gets to me is the precision this requires. You don’t stumble into this. You need to understand the architecture so deeply that you can trigger specific glitches, manipulate memory, and make arbitrary code execute. It’s technical mastery that looks like play—someone who’s spent enough time with one game to weaponize it.

Years ago I put months into Super Mario World just trying to find all 96 levels. Running the same platforms, collecting coins, playing it straight. That felt like a real accomplishment. Now I watch Masterjun run Pong inside the game’s skeleton and I understand how wide the gap is between just playing something and actually understanding how it works.