# Unity

> Unity 6 game engine, core for developers: editor, GameObjects/components/prefabs, MonoBehaviour scripting & lifecycle, physics, input, rendering pipelines, UI Toolkit, packages.
> Covers: Unity 6 (docs.unity3d.com/6000.0) core concepts for developers: the editor & projects, GameObjects/components/prefabs & Transform, the MonoBehaviour scripting model, event functions & execution order, coroutines, ScriptableObjects, physics (rigidbodies/colliders), the Input System, UI Toolkit & uGUI, the rendering-pipeline landscape (Built-in/URP/HDRP), packages/UPM, performance best-practices, and a common-gotchas casebook. Verified against Unity 6.0 docs, 2026-07-17.
> Not covered: The Unity Scripting API reference (per-class API site); deep specialist areas outside core dev — 2D/sprites, netcode/multiplayer, Addressables, DOTS/ECS internals, shader authoring, platform-specific build pipelines, VR/AR; and third-party Asset Store tools (the ecosystem catalog is an archived community snapshot, not current guidance).
> Current as of: 2026-07-17 (6.0)

- [LLM Wiki](/raw/unity/README.md)
- [Knowledge Base Index](/raw/unity/wiki/index.md)
- [Animation System](/raw/unity/wiki/concepts/animation.md)
- [Coroutines](/raw/unity/wiki/concepts/coroutines.md)
- [Editor and Projects](/raw/unity/wiki/concepts/editor-and-projects.md)
- [MonoBehaviour Event Functions and Execution Order](/raw/unity/wiki/concepts/event-lifecycle.md)
- [GameObjects, Components, and Prefabs](/raw/unity/wiki/concepts/gameobjects-components-prefabs.md)
- [Input System (package)](/raw/unity/wiki/concepts/input-system.md)
- [Unity 6 Overview](/raw/unity/wiki/concepts/overview.md)
- [Packages and the Unity Package Manager (UPM)](/raw/unity/wiki/concepts/packages.md)
- [Performance and Best Practices](/raw/unity/wiki/concepts/performance-best-practices.md)
- [Physics System](/raw/unity/wiki/concepts/physics.md)
- [Rendering Pipelines](/raw/unity/wiki/concepts/rendering-pipelines.md)
- [ScriptableObject](/raw/unity/wiki/concepts/scriptableobjects.md)
- [The Unity Scripting Model](/raw/unity/wiki/concepts/scripting-model.md)
- [UI Toolkit and Unity UI (uGUI)](/raw/unity/wiki/concepts/ui-toolkit.md)
- [Unity Ecosystem Catalog](/raw/unity/wiki/entities/unity-ecosystem.md)
- [Activity Log](/raw/unity/wiki/log.md)
- [Common Unity Gotchas: A Casebook](/raw/unity/wiki/syntheses/common-gotchas.md)
- [Render Pipeline Picker: Built-In vs URP vs HDRP](/raw/unity/wiki/syntheses/render-pipeline-picker.md)

## XL edition (Pro)

> Deeper per-item reference pages. Requires a subscription (/pro) — send
> `Authorization: Bearer <api key>` on the /raw/ URLs below.

- [XL Edition Index](/raw/unity/wiki-xl/index.md) — Pro
- [Animator Component and Animator Controller](/raw/unity/wiki-xl/reference/animation-animator.md) — Pro
- [Animation Clips — Import Settings and the AnimationClip API](/raw/unity/wiki-xl/reference/animation-clips.md) — Pro
- [Animation State Machines and Blend Trees](/raw/unity/wiki-xl/reference/animation-state-machines.md) — Pro
- [High Definition Render Pipeline — Overview, HDRP Asset, Volumes](/raw/unity/wiki-xl/reference/hdrp-reference.md) — Pro
- [Input System — Actions and Action Assets in Depth](/raw/unity/wiki-xl/reference/input-system-actions-and-assets.md) — Pro
- [Input System — Devices, Controls, Interactions, and Legacy Migration](/raw/unity/wiki-xl/reference/input-system-devices-and-controls.md) — Pro
- [Input System — The PlayerInput Component in Depth](/raw/unity/wiki-xl/reference/input-system-playerinput.md) — Pro
- [Physics Colliders — Box, Sphere, Capsule, Mesh, Character Controller](/raw/unity/wiki-xl/reference/physics-colliders-reference.md) — Pro
- [Physics Joints and Collision — Hinge Joint, Configurable Joint, Layer-Based Collision, CCD](/raw/unity/wiki-xl/reference/physics-joints-and-collision.md) — Pro
- [Scripting API — Vector3, Quaternion, Mathf](/raw/unity/wiki-xl/reference/scripting-api-math-types.md) — Pro
- [Scripting API — MonoBehaviour (Messages, Properties, Methods)](/raw/unity/wiki-xl/reference/scripting-api-monobehaviour.md) — Pro
- [Scripting API — Rigidbody, Physics, Camera](/raw/unity/wiki-xl/reference/scripting-api-physics-and-camera.md) — Pro
- [Scripting API — Time, Coroutine, ScriptableObject](/raw/unity/wiki-xl/reference/scripting-api-time-and-objects.md) — Pro
- [Scripting API — Transform, GameObject, Component](/raw/unity/wiki-xl/reference/scripting-api-transform-gameobject.md) — Pro