Hacking GameCube Memory: Replacing Animal Crossing Dialogue with a Live LLM

2025-09-10

This project details how the author successfully integrated a large language model (LLM) into the 2001 GameCube game Animal Crossing without modifying the game's code. By leveraging shared memory and reverse engineering techniques, the author bypassed the lack of internet connectivity and created a real-time AI dialogue system. Challenges included finding stable memory addresses, decoding the game's internal text encoding, and architecting the AI pipeline (a 'Writer' and 'Director' LLM). The result? Villagers now discuss current events and even develop their own political opinions, transforming the classic game experience.

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