Someone just shipped an overnight interactive 3D web game with Claude Opus 5.5 as the orchestrator — concept plates → Hi3D MCP meshes → Draco glb → Three.js physics/water/particles → WebAudio. Real browser demo. Not a diffusion clip.

I remade the *format* tonight as an original desert scene (neon mesa outpost, not their ocean ships). claude-opus-5-5 on Keyo wrote one self-contained HTML file (10/27/2026). Root is a Chrome frame-stitch of that page. Soft plug: http://keyoapi.xyz

Thread = their 5 steps → our remake → timings → concept plates → flaws → source 🧵