Real Transformer Language Model Running Locally on a Stock Game Boy Color — No Cloud, No PC

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A developer got Andrej Karpathy's TinyStories-260K model running entirely on a stock Game Boy Color with INT8 weights on a custom ROM cartridge — no phone, PC, Wi-Fi, or cloud inference. 827 upvotes and 60 comments on r/LocalLLaMA. While not practically useful, it's a striking demonstration of how far inference optimization has come: a transformer model running on 1990s 8-bit hardware with 32KB of RAM. The project showcases extreme quantization and embedded deployment techniques.