Haunted House Mystery Runs Locally on Gemma, Where a Ghost May Be Lying

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A developer has built The Ofrenda House, a first-person horror mystery set in a haunted mansion inspired by Día de los Muertos. The game runs entirely on the player's own computer, using the open-weight Gemma 3 4B model through Ollama to voice the spirits, with no cloud services or accounts required. Players must find the ghosts of a family poisoned for inheritance, answer their riddles, and identify the killer hidden among them, who gives a clue that contradicts another spirit's. Each run randomizes the household, its secrets, and the culprit, and the accusation is made by placing a marigold on a portrait at the ofrenda. The project is open source and can be run with Node, Ollama, and optional Piper text-to-speech voices.

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