Behaviour Tree Lua 2nd Edition
🟠 Updated over a year ago⚠️ Install Order · 2 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 1.3% endorsement rate — high engagement, a strong quality signal
- 🏆 #8 of 17 Modders Resources and Tutorials mods in this game by downloads
📋 About This Mod
This is a flexible pure Lua behaviour tree library.
Primarily meant to be used with Behaviour 3+ Visual Editor
All details can be found in this repository
This nexus page is simply for the convenience of Mod Organizer 2 installation.
Installation
The usual: use Mod Organizer 2, or manually copy contents of the archive into your .. Morrowind/Data Files/ folder.
You don't need to activate any files anywhere for this library to work. Mods using it will get a hold of it directly in code.
A pure Lua behaviour tree library for modders, providing a framework to implement AI logic in games. With 288 endorsements and 21,766 downloads, it's a well-used resource. Last updated January 2025, it offers a solid foundation for creating complex NPC behaviors.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Solid community trust (288 endorsements) — modders have put this to work
- Pure Lua means no bloat, just drop it into your project
- Still updated as of January 2025, so it's not abandoned
⚠️ Cons
- No documentation or examples in the description — you'll need to figure out the API yourself
- It's a resource, not a plug-and-play mod — requires coding knowledge to use
- No explicit game compatibility listed, so you'll need to test it in your target game
For modders who want a lightweight behaviour tree system to script NPC AI. Skip if you're a player looking for gameplay changes — this is a developer tool.
💡 Beginner Tips
- If you're new to behaviour trees, look up the concept first — this library expects you to know how they work.
- Check the mod's forum or comments for usage examples, since the description doesn't include any.
- Since it's pure Lua, you can integrate it into your mod's scripts by requiring the library file.
📊 Mod Details
- Game
- Morrowind Mods
- Author
- Max Yari and Renato de Pontes Pereira
- Version
- 1.0
- Downloads
- 21,766
- Endorsements
- 288
- Category
- Modders Resources and Tutorials
- Created
- 8/4/2024
- Updated
- 1/20/2025
🧩 Commonly Used Together
Users add these mods to the same collections — a real compatibility signal, not an AI guess.
🔧 How to Install Morrowind Mods
Download from Nexus.
📖 Full step-by-step install guide for Morrowind →
Visit the official mod page for specific installation instructions for this mod.
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