Pick one of eight racers, such as Blaze the fox, and an engine class from 50cc to 150cc, then race seven rivals in a Grand Prix cup, a single VS race or a time trial. The Turbo Cup runs three laps each on Sunshine Circuit, Dune Canyon, Frost Peak and Neon Skyway, starting on a meadow course past grandstands and windmills. Space or Shift hops into a drift, and a loading tip explains that holding the item button trails a Peel or Bouncer behind you as a shield. Works on computers and phones, where it switches to on-screen steering and an auto-accelerate button.
How the creator made it
The creator says they gave Claude Opus 5.5 a single brief for a Mario Kart-style racer in Three.js at extra-high effort, without writing code or sending follow-up prompts. They say Claude split the work among five agents and played races in a browser to find and fix bugs. The game makes its music and sound effects in code. The creator reports about five hours and about $125 for the run.
From their post on X ↗ and another post on X ↗.
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The game belongs to @EnvolDev. Preview recorded by us. Made this game? Here's how we list it.