Solo dev builds entire game as a single 5MB HTML file with Claude Opus in 2 weeks

FatesWaltz · reddit · 2026-10-01

Reddit user FatesWaltz showcased a complete game built entirely with Claude Opus over two weeks. Everything except the AI-generated music lives in one 5MB HTML file that runs without any build pipeline. The author says the game has so many systems that he just went with a basic presentation, and the project stands as another data point for how far frontier coding models have come at single-file, multi-system app development.

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