Claude Code builds a 61 KB WebGPU ocean simulation in one prompt, 30 minutes
Any-Reputation8118 · reddit · 2026-10-17
A developer used Claude Code (Opus 5.5) with a single prompt to write a 61 KB single-file HTML page rendering a sunset ocean in WebGPU: FFT wave simulation, whitecaps, physically based sky with clouds, and sun glitter. It runs above 30 FPS at 1440p on an RTX 5070 Ti (1080p screenshot shows 180 FPS). The key trick: Claude screenshotted its own output and had separate subagents critique the screenshots instead of judging its own work. Whole build took 30 minutes, no engine or libraries. Free to try in a WebGPU-capable Chrome.
Related event: Claude Code generates a 61KB real-time WebGPU ocean from a single prompt(6 posts)→
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