Cozy 3D City Builder Game Builder

Claude Code builds a complete cozy 3D city builder in Three.js that runs in any browser. Draw roads, zone homes and shops that grow and level up, add parks, power and water, and watch cars and citizens move. Money, happiness and population economy, day-night cycle with lit windows, landmarks unlocked by population, autosave. All models, textures and sounds are code. A ?demo=1 mode builds a town for trailers. Three variables set the theme, landmarks and art style.