3d Fish School Io Arena Game Builder

One prompt that builds a 3D fish school io arena game in a single HTML file (WebGL), made for Claude Code. The twist is the school: small fry you spare follow you and count toward your size while they stay close; a bigger rival that scatters them shrinks you. Eat what is smaller, flee what is bigger: you vs 5 named bots. 3 modes (Classic, Survival, Feast), 3 arenas with hazards, power-ups, a 5-match Cup, cosmetics, touch, gamepad and keyboard. 20 bonus idea sets. Try the demo.