3D Junkyard Magnet Io Game Builder

One prompt that builds a complete 3D grow-and-collect magnet game in a single HTML file with three.js, made for Claude Code. Roll a magnet ball through a scrapyard town, snap up bolts, bikes, cars and buses, outgrow 5 rival magnets in 2-minute rounds and finally pull in a giant landmark. Push to steal scrap, 3 seeded districts, upgrades and skins, a daily yard and touch controls. Includes 20 bonus ready-to-use idea sets. Try the live demo.