---
title: "Introducing Behaviour Trees"
content_type: tutorial
url: "https://learn.unity.com/tutorial/introducing-behaviour-trees?language=en"
language: en
difficulty: intermediate
duration_minutes: 5
unity_version:
  - "2021.3"
supported_unity_versions:
  - name: "2021.3"
    url: "https://learn.unity.com/tutorial/introducing-behaviour-trees.md?language=en&version=2021.3"
  - name: "2021.1"
    url: "https://learn.unity.com/tutorial/introducing-behaviour-trees.md?language=en&version=2021.1"
  - name: "2020.3"
    url: "https://learn.unity.com/tutorial/introducing-behaviour-trees.md?language=en&version=2020.3"
  - name: "2020.2"
    url: "https://learn.unity.com/tutorial/introducing-behaviour-trees.md?language=en&version=2020.2"
last_updated: "2026-08-04T14:22:42.000Z"
---

# Introducing Behaviour Trees

Study the structure of behavior trees and the key elements used to build them.

In this lecture students will learn about the structure of behaviour trees and the fundamental elements that are used to construct them.

## Introduction to behaviour trees

[Video](https://connect-mediagw.unity.com/h1/20220916/videos/1112c572-7264-4ac5-9069-b69f0d238bd4_S1101.mp4) ([Transcript (en)](https://connect-mediagw.unity.com/h1/20221012/907b36e5-0b94-49d1-b551-a42deb80c266_S1101.vtt))