Open on XXR developer Lucas Martinic posted a clip of Super Mario 64 running in mixed reality on unreleased PICO hardware. Mario plays inside a floating window, then jumps out onto the real desk and kitchen floor. He credits Claude Opus 5.5 for the build.
His post, verbatim:
"Full Mario 64 in Mixed Reality! Running in real 3D (no stereoscopic crap) natively at 90FPS and also running on my desk! 😋 Again, Opus 5.5 + PICO CLI combo made it quite straightforward."
I haven't played it. This is based on Martinic's posts, the clip, and press coverage.
What changed since August
Martinic's first take, prototype 14 of his "100" series, ran on Meta Quest 3 in August and passed 3.4 million views on X. Good VR's Ian Hamilton tried that APK with his own cartridge backup. He could "pinch him by the hat and pull him forward into the physical room". Then he hit the wall:
"I put Mario back inside his virtual world and then used the stick to send him into the castle. That's where the magic ended."
The new clip goes past that wall. Mario enters the castle, jumps into the snowman painting, and Cool Cool Mountain unfolds across the room.
The Verge's Sean Hollister covered the clip. On the code, he wrote: "This one's based on the full open-source Mario64 decomp, says creator Lucas Martinic, with assist from Claude Opus 5.5."
How it was built
Martinic described the same setup in an Oct 20 post about a time-freezing app. There, Claude Code installed Unity 6, the Unity CLI and the PICO CLI on a new Mac. It then built the first version with headless tools. He told Good VR he spends about $600 a month on three Claude Max plans.
Asked which glasses he used, Martinic replied: "Unreleased tech from PICO". On the goal, he told Good VR:
"That's the idea, to just inspire other developers and maybe non-XR developers to jump into XR,"
Open on XThe open question is headset support. The new clip runs on PICO hardware that isn't on sale, so a repo that only targets it would leave most players watching.
