Bring NPCs to life with AI
Mantella brings every NPC in Skyrim and Fallout 4 to life with AI. Natural voice conversations, real-time responses, persistent memory, dynamic actions, and full awareness of the world around them.
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Install it, launch the game, start talking to NPCs. No faff. Mantella quietly launches in the background when you start the game and gets out of your way. Works out of the box with Wabbajack modlists.
Long response times kill immersion. Mantella is thoroughly tested to stay lightweight and enable real-time conversations.
Mantella is free and open source. Run everything locally on your own hardware, or plug in OpenAI, OpenRouter, or any OpenAI-compatible API. No data leaves your PC unless you choose.
🗣️ Interact with 3,000+ NPCs, each with their own unique background (or add your own)
💭 NPCs remember past conversations with you
🌍 NPCs are aware of in-game events
👁️ NPCs can see what you see
⚔️ NPCs can perform 20+ actions - follow, attack, trade, travel to locations, cast spells, and more
👥 NPCs can start conversations with each other, approach you, or join group conversations
🤖 Works with local models (Llama, Gemma, etc) and APIs (OpenAI, OpenRouter, NanoGPT)
⚙️ Pre-packaged with speech-to-text and text-to-speech services - so you can get started faster
🌐 Compatibility with 20+ languages
🕶️ Fully playable in VR / SE / AE
See the latest trailer for Fallout 4 below:
Mantella docs built by Leidtier.