I gave Claude Code a 7-line PRD and had a playable drifting game 30 minutes later. The rest was a few hours of iterating while I did other things. Drift Lane runs in the browser on phone and desktop, in portrait and landscape. Codex helped me with the concept, Claude Code built it in Three.js, and the car came from Tripo and Blender. Here is the whole PRD. Paste it into Claude Code or Codex and see what you get: Core concept: An arcade drifting game where you navigate narrow, elevated tracks, avoid obstacles, and collect coins. What stands out: - Simple controls: Steering and drifting are the main mechanics. - Risk/reward: Drifting close to the edges creates tension. - Short levels: Ideal for quick mobile sessions. - Visual feedback: Persistent tire marks make every turn feel satisfying. - Minimalist 3D style: Relatively straightforward to recreate in Unity or Three.js. After the first build I played it myself and changed a few things. I found it very hard at first, so the tracks got wider and the early corners gentler. Grazing the edge killed you instantly, so now you get a moment to steer back. The left and right buttons were hard to hit, so they became a floating joystick. Play link in the reply.