Built a full 3D browser game using Claude Code - Traffic Architect, road builder/traffic management

I built Traffic Architect - a 3D road building/traffic management browser game. The whole project was built using Claude Code + Three.js. The game: you design road networks to keep a growing city moving. Buildings spawn and generate cars that need to reach other buildings. Connect them with roads, earn money from deliveries, unlock new road types as you progress. If traffic backs up too badly - game over. Play it here: https://www.crazygames.com/game/traffic-architect-tic What Claude Code built: - Three.js scene setup, camera system, rendering pipeline - A* pathfinding for vehicle routing through the road network - Road intersection and snapping logic - Vehicle spawning, movement, and traffic flow simulation (but still required a lot of iteration to fix road/lane switching for cars) - UI elements and minimalistic 3d models What needed human direction: - Game design decisions - what makes it fun, pacing, difficulty curve - Balancing economy - income per delivery, road costs,…