3D Kart Racing Game Builder

One prompt that builds a complete 3D kart racer in a single HTML file with three.js: hop-drift mini-turbos, boost pads and ramps, 8 racers with AI personalities, 6 original power-ups, 6 hand-made tracks with shortcuts, Grand Prix cups with trophies, Time Trial with a saved ghost, a garage of racers, karts and paints, achievements, keyboard, gamepad and touch controls, and an autoplay mode for trailers. Works offline, ready for itch.io or CrazyGames.