Opus 5.5 builds a mango-jelly dam in one HTML file

Bengi @BengiyaiOriginally posted 2026.10.26

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Claude Opus 5.5 built a hydroelectric dam out of mango jelly, all in one HTML file. It’s plain WebGL2 with no libraries. The lake is a live wave simulation, the reservoir level responds to inflow, the spillway gates and the turbines, and power output depends on hydraulic head. Press Flood and a storm comes in with lightning and rain, the water turns muddy, and the lake spills over the crest. The jelly comes in mango, raspberry or yuzu.