3D Arcade Kart Racing Game Builder

Claude Code builds a complete 3D arcade kart racer in Three.js that runs in any browser. Hop-and-drift with 3-level spark boosts, 8 karts with AI drivers on 3 difficulties, item boxes weighted by position, 4 spline tracks with jumps and shortcuts, Grand Prix, Single Race and Time Trial with ghosts. Keyboard, gamepad and touch. Every model, texture and sound is made in code. A ?demo=1 mode races itself for trailers. Three variables set the theme, items and art style.