Developer Creates Working NES Emulator Using AI-Generated Code, But Performance Lags 40X Behind Traditional Emulators

Jan 04, 2026
Tom's Hardware
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Summary

Developer Rodrigo Delduca successfully creates a functional NES emulator using AI-generated Lua scripts that runs Donkey Kong in web browsers, though the groundbreaking AI-coded system performs 40 times slower than traditional emulators.

Key Points

  • Developer Rodrigo Delduca successfully uses Claude AI to generate Lua scripts that create a functional NES emulator running on his Carimbo 2D game engine
  • The AI-generated emulator allows users to play Donkey Kong directly in web browsers, with separate scripts handling NES CPU, PPU, input, and bus functions
  • Performance testing reveals the AI-coded emulator runs significantly slower than traditional emulators, with some users reporting a 40X performance drop compared to existing online NES emulators

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