User builds world's most accurate NES emulator with Claude in a single 339KB HTML file
MAGA_R_TRAITORS · reddit · 2026-08-20
The author claims to have used Claude to build an NES emulator with hardware accuracy surpassing Mesen 2. The emulator is a single 339KB HTML file that achieved a perfect score of 141 on AccuracyCoin tests after hours of iterative refinement with test ROMs. The author observed the model incrementally fixing code to improve accuracy point by point and demonstrated playing games on a mobile browser via Bluetooth controller. The author also discussed the dilemma of whether to open source it to avoid disrespecting long-time emulator developers.
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