Unity Manual
- Unity User Manual 2021.3 (LTS)
- New in Unity 2021 LTS
- Packages and feature sets
- Released packages
- 2D Animation
- 2D Aseprite Importer
- 2D Pixel Perfect
- 2D PSD Importer
- 2D SpriteShape
- 2D Tilemap Extras
- Adaptive Performance
- Addressables
- Ads Mediation
- Advertisement Legacy
- Alembic
- Analytics
- Android Logcat
- Animation Rigging
- Apple ARKit Face Tracking XR Plugin
- Apple ARKit XR Plugin
- AR Foundation
- Authentication
- Burst
- CCD Management
- Cinemachine
- Cloud Code
- Cloud Save
- Cloud Services Apis
- Code Coverage
- Collections
- Deployment
- Economy
- Editor Coroutines
- FBX Exporter
- Friends
- Google ARCore XR Plugin
- In App Purchasing
- Input System
- iOS 14 Advertising Support
- JetBrains Rider Editor
- Leaderboards
- Live Capture
- Lobby
- Localization
- Magic Leap XR Plugin
- Matchmaker
- Mathematics
- Microsoft GDK API
- Microsoft GDK Tools
- ML Agents
- Mobile Notifications
- Moderation
- Multiplay
- Multiplayer Tools
- Netcode for GameObjects
- Oculus XR Plugin
- OpenXR Plugin
- Player Accounts
- Polybrush
- Post Processing
- ProBuilder
- Profile Analyzer
- Push Notifications
- Recorder
- Relay
- Remote Config
- Scriptable Build Pipeline
- Sequences
- Services Tooling
- Sysroot Base
- Sysroot Linux x64
- Terrain Tools
- Test Framework
- TextMeshPro
- Timeline
- Toolchain Linux x64
- Toolchain MacOS Linux x64
- Toolchain Win Linux x64
- Tutorial Authoring Tools
- Tutorial Framework
- Unity Profiling Core API
- Unity Transport
- Version Control
- Visual Scripting
- Visual Studio Code Editor
- Visual Studio Editor
- Vivox
- WebGL Publisher
- XR Hands
- XR Interaction Toolkit
- XR Plugin Management
- Release Candidates
- Pre-release packages
- Core packages
- Built-in packages
- AI
- Android JNI
- Animation
- Asset Bundle
- Audio
- Cloth
- Director
- Image Conversion
- IMGUI
- JSONSerialize
- NVIDIA
- Particle System
- Physics
- Physics 2D
- Screen Capture
- Terrain
- Terrain Physics
- Tilemap
- UI
- UIElements
- Umbra
- Unity Analytics
- Unity Web Request
- Unity Web Request Asset Bundle
- Unity Web Request Audio
- Unity Web Request Texture
- Unity Web Request WWW
- Vehicles
- Video
- VR
- Wind
- XR
- Experimental packages
- Packages by keywords
- Unity's Package Manager
- How Unity works with packages
- Concepts
- Configuration
- Package Manager window
- Access the Package Manager window
- List view
- Details view
- Features (detail) view
- Finding packages and feature sets
- Add and remove UPM packages or feature sets
- Install a feature set from the Unity registry
- Install a UPM package from a registry
- Install a UPM package from the Asset Store
- Install a UPM package from a local folder
- Install a UPM package from a local tarball file
- Install a UPM package from a Git URL
- Install a UPM package by name
- Remove a UPM package from a project
- Switch to another version of a UPM package
- Add and remove asset packages
- Disable a built-in package
- Finding package documentation
- Inspecting packages
- Scripting API for packages
- Scoped registries
- Resolution and conflict
- Project manifest
- Troubleshooting
- Creating custom packages
- Feature sets
- Released packages
- Working in Unity
- Installing Unity
- System requirements for Unity 2021 LTS
- Install Unity using installer files
- Install Unity using Download Assistant
- Installing Unity from the command line
- Install Unity on offline computers
- Licenses and activation
- 2D or 3D projects
- Upgrading Unity
- Unity's interface
- Quickstart guides
- Advanced best practice guides
- Create Gameplay
- Editor Features
- Analysis
- Memory in Unity
- Profiler overview
- Profiling your application
- Common Profiler markers
- The Profiler window
- Asset Loading Profiler module
- Audio Profiler module
- CPU Usage Profiler module
- File Access Profiler module
- Global Illumination Profiler module
- GPU Usage Profiler module
- Memory Profiler module
- Physics Profiler module
- 2D Physics Profiler module
- Rendering Profiler module
- UI and UI Details Profiler
- Video Profiler module
- Virtual Texturing Profiler module
- Customizing the Profiler
- Low-level native plug-in Profiler API
- Profiling tools
- Log files
- Understanding optimization in Unity
- Asset loading metrics
- Installing Unity
- Asset Workflow
- Input
- 2D game development
- Introduction to 2D
- 2D game development quickstart guide
- 2D Sorting
- Work with sprites
- Import images as sprites
- Sort sprites
- Sprite Renderer
- Sprite Creator
- Sprite Editor
- Sorting Groups
- 9-slicing Sprites
- Sprite Masks
- Sprite Atlas
- Sprite Shape Renderer
- Tilemaps
- Physics Reference 2D
- Graphics
- Render pipelines
- Render pipelines introduction
- # Render pipeline feature comparison
- How to get, set, and configure the active render pipeline
- Choosing and configuring a render pipeline and lighting solution
- Using the Built-in Render Pipeline
- Using the Universal Render Pipeline
- Using the High Definition Render Pipeline
- Scriptable Render Pipeline fundamentals
- Creating a custom render pipeline
- Cameras
- Lighting
- Introduction to lighting
- Light sources
- Shadows
- The Lighting window
- Lighting Settings Asset
- The Light Explorer window
- Lightmapping
- Realtime Global Illumination using Enlighten
- Light Probes
- Reflection Probes
- Precomputed lighting data
- Scene View Draw Modes for lighting
- Models
- Meshes
- Textures
- Importing Textures
- Texture formats
- Mipmaps
- Render Texture
- Custom Render Textures
- Movie Textures
- 3D textures
- Texture arrays
- Cubemaps
- Cubemap arrays
- Streaming Virtual Texturing
- Streaming Virtual Texturing requirements and compatibility
- How Streaming Virtual Texturing works
- Enabling Streaming Virtual Texturing in your project
- Using Streaming Virtual Texturing in Shader Graph
- Cache Management for Virtual Texturing
- Marking textures as "Virtual Texturing Only"
- Virtual Texturing error material
- Sparse Textures
- Loading texture and mesh data
- Shaders
- Shaders core concepts
- Built-in shaders
- Standard Shader
- Standard Particle Shaders
- Autodesk Interactive shader
- Legacy Shaders
- Using Shader Graph
- Writing shaders
- Writing shaders overview
- ShaderLab
- ShaderLab: defining a Shader object
- ShaderLab: defining a SubShader
- ShaderLab: defining a Pass
- ShaderLab: adding shader programs
- ShaderLab: specifying package requirements
- ShaderLab: commands
- ShaderLab: grouping commands with the Category block
- ShaderLab command: AlphaToMask
- ShaderLab command: Blend
- ShaderLab command: BlendOp
- ShaderLab command: ColorMask
- ShaderLab command: Conservative
- ShaderLab command: Cull
- ShaderLab command: Offset
- ShaderLab command: Stencil
- ShaderLab command: UsePass
- ShaderLab command: GrabPass
- ShaderLab command: ZClip
- ShaderLab command: ZTest
- ShaderLab command: ZWrite
- ShaderLab legacy functionality
- HLSL in Unity
- Preprocessor directives in HLSL
- Shader semantics
- Accessing shader properties in Cg/HLSL
- Providing vertex data to vertex programs
- Built-in shader include files
- Built-in macros
- Built-in shader helper functions
- Built-in shader variables
- HLSL data types
- Use 16-bit precision in shaders
- Using sampler states
- GLSL in Unity
- Example shaders
- Writing Surface Shaders
- Writing shaders for different graphics APIs
- Understanding shader performance
- Materials
- Visual effects
- Post-processing and full-screen effects
- Particle systems
- Choosing your particle system solution
- Built-in Particle System
- Using the Built-in Particle System
- Particle System vertex streams and Standard Shader support
- Particle System GPU Instancing
- Particle System C# Job System integration
- Components and Modules
- Particle System
- Particle System modules
- Main module
- Emission module
- Shape module
- Velocity over Lifetime module
- Noise module
- Limit Velocity over Lifetime module
- Inherit Velocity module
- Lifetime by Emitter Speed module
- Force over Lifetime module
- Color over Lifetime module
- Color by Speed module
- Size over Lifetime module
- Size by Speed module
- Rotation over Lifetime module
- Rotation by Speed module
- External Forces module
- Collision module
- Triggers module
- Sub Emitters module
- Texture Sheet Animation module
- Lights module
- Trails module
- Custom Data module
- Renderer module
- Particle System Force Field
- Visual Effect Graph
- Decals and projectors
- Lens flares and halos
- Lines, trails, and billboards
- Sky
- Color
- Graphics performance and profiling
- Render pipelines
- World building
- Physics
- Built-in 3D Physics
- Character control
- Rigidbody physics
- Collision
- Joints
- Articulations
- Ragdoll physics
- Cloth
- Multi-scene physics
- Built-in 3D Physics
- Scripting
- Setting Up Your Scripting Environment
- Scripting concepts
- Important Classes
- Unity architecture
- Plug-ins
- Job system
- UnityWebRequest
- Multiplayer
- Audio
- Audio overview
- Audio files
- Tracker Modules
- Audio Mixer
- Native audio plug-in SDK
- Audio Profiler
- Ambisonic Audio
- Audio Reference
- Audio Clip
- Audio Listener
- Audio Source
- Audio Mixer
- Audio Filters
- Audio Effects
- Audio Low Pass Effect
- Audio High Pass Effect
- Audio Echo Effect
- Audio Flange Effect
- Audio Distortion Effect
- Audio Normalize Effect
- Audio Parametric Equalizer Effect
- Audio Pitch Shifter Effect
- Audio Chorus Effect
- Audio Compressor Effect
- Audio SFX Reverb Effect
- Audio Low Pass Simple Effect
- Audio High Pass Simple Effect
- Reverb Zones
- Microphone
- Audio Settings
- Video and cutscenes
- Animation
- Animation system overview
- Rotation in animations
- Animation Clips
- Animator Controllers
- Retargeting of Humanoid animations
- Performance and optimization
- Animation Reference
- Animation FAQ
- Playables API
- A Glossary of animation terms
- Legacy Animation system
- User interface (UI)
- Comparison of UI systems in Unity
- UI Toolkit
- Get started with UI Toolkit
- UI Builder
- Structure UI
- The visual tree
- Structure UI with UXML
- Structure UI with C# scripts
- Custom controls
- Best practices for managing elements
- Encapsulate UXML documents with logic
- UXML elements reference
- UXML element BindableElement
- UXML element VisualElement
- UXML element BoundsField
- UXML element BoundsIntField
- UXML element Box
- UXML element Button
- UXML element ColorField
- UXML element CurveField
- UXML element DoubleField
- UXML element DropdownField
- UXML element EnumField
- UXML element EnumFlagsField
- UXML element FloatField
- UXML element Foldout
- UXML element GradientField
- UXML element GroupBox
- UXML element Hash128Field
- UXML element HelpBox
- UXML element IMGUIContainer
- UXML element Image
- UXML element InspectorElement
- UXML element IntegerField
- UXML element Label
- UXML element LayerField
- UXML element LayerMaskField
- UXML element LongField
- UXML element ListView
- UXML element MaskField
- UXML element MinMaxSlider
- UXML element ObjectField
- UXML element PopupWindow
- UXML element ProgressBar
- UXML element PropertyField
- UXML element RadioButton
- UXML element RadioButtonGroup
- UXML element RectField
- UXML element RectIntField
- UXML element RepeatButton
- UXML element ScrollView
- UXML element Scroller
- UXML element Slider
- UXML element SliderInt
- UXML element TagField
- UXML element TextElement
- UXML element TextField
- UXML element TemplateContainer
- UXML element Toggle
- UXML element Toolbar
- UXML element ToolbarBreadcrumbs
- UXML element ToolbarButton
- UXML element ToolbarMenu
- UXML element ToolbarPopupSearchField
- UXML element ToolbarSearchField
- UXML element ToolbarSpacer
- UXML element ToolbarToggle
- UXML element TwoPaneSplitView
- UXML element Vector2Field
- UXML element Vector2IntField
- UXML element Vector3Field
- UXML element Vector3IntField
- UXML element Vector4Field
- Structure UI examples
- Create a complex list view
- Create a list view runtime UI
- Wrap content inside a scroll view
- Create a tabbed menu for runtime
- Create a pop-up window
- Use Toggle to create a conditional UI
- Create a custom control with two attributes
- Create a slide toggle custom control
- Use Mesh API to create a radial progress indicator
- Create a bindable custom control
- Create a custom style for a custom control
- Style UI
- UI Toolkit Debugger
- Control behavior with events
- Support for Editor UI
- Create a custom Editor window
- Create a Custom Inspector
- SerializedObject data binding
- Bindable elements reference
- Bindable data types and fields
- Binding system implementation details
- Binding examples
- Bind with binding path in C# script
- Bind without the binding path
- Bind with UXML and C# script
- Create a binding with the Inspector
- Bind to nested properties
- Bind to a UXML template
- Receive callbacks when a bound property changes
- Receive callbacks when any bound properties change
- Bind to a list with ListView
- Bind to a list without ListView
- Bind a custom control
- Bind a custom control to custom data type
- View data persistence
- Support for runtime UI
- Work with text
- Examples
- Migration guides
- Unity UI
- Immediate Mode GUI (IMGUI)
- Navigation and Pathfinding
- Navigation Overview
- Navigation System in Unity
- Inner Workings of the Navigation System
- Building a NavMesh
- NavMesh building components
- Advanced NavMesh Bake Settings
- Creating a NavMesh Agent
- Creating a NavMesh Obstacle
- Creating an OffMesh Link
- Building OffMesh Links Automatically
- Building Height Mesh for Accurate Character Placement
- Navigation Areas and Costs
- Loading Multiple NavMeshes using Additive Loading
- Using NavMesh Agent with Other Components
- Navigation Reference
- Navigation How-Tos
- Navigation Overview
- Unity Services
- Setting up your project for Unity services
- Unity Organizations
- Unity Ads
- Unity Analytics
- Unity Cloud Content Delivery
- Unity Build Automation (formerly Cloud Build)
- Unity IAP
- Setting up Unity IAP
- Cross Platform Guide
- Codeless IAP
- Defining products
- Subscription Product support
- Initialization
- Browsing Product Metadata
- Initiating Purchases
- Processing Purchases
- Handling purchase failures
- Restoring Transactions
- Purchase Receipts
- Receipt validation
- Store Extensions
- Cross-store installation issues with Android in-app purchase stores
- Store Guides
- Implementing a Store
- Unity Cloud Diagnostics
- Unity Integrations
- Multiplayer Services
- Unity Distribution Portal
- Unity Accelerator
- Unity's Asset Store
- Asset Store packages
- Publishing to the Asset Store
- Creating your Publisher Account
- Creating a new package draft
- Deleting a package draft
- Uploading assets to your package
- Filling in the package details
- Submitting your package for approval
- Viewing the status of your Asset Store submissions
- Collecting revenue
- Providing support to your customers
- Adding tags to published packages
- Connecting your account to Google Analytics
- Promoting your Assets
- Refunding your customers
- Upgrading packages
- Deprecating your Assets
- Issuing vouchers
- Managing your publishing team
- Asset Store Publisher portal
- Platform development
- Cross-platform features and considerations
- Android
- Introducing Android
- Getting started with Android
- Developing for Android
- Android mobile scripting
- Input for Android devices
- Android application size restrictions
- Graphics for Android
- Testing and debugging
- Create and use plug-ins in Android
- Integrating Unity into Android applications
- Deep linking on Android
- Android thread configuration
- Device features and permissions
- Handle Android crashes
- Quit a Unity Android application
- Building and delivering for Android
- Chrome OS
- Dedicated Server
- Embedded systems
- iOS
- Introducing iOS
- Getting started with iOS
- Developing for iOS
- Building and delivering for iOS
- Linux
- macOS
- tvOS
- Universal Windows Platform
- Introduction to Universal Windows Platform
- Get started with Universal Windows Platform
- Develop for Universal Windows Platform
- Build and deliver for Universal Windows Platform
- WebGL
- WebGL introduction
- WebGL development
- WebGL Player settings
- Interaction with browser scripting
- Code examples: Call JavaScript and C/C++/C# functions in Unity
- Set up your JavaScript plug-in
- Call JavaScript functions from Unity C# scripts
- Call Unity C# script functions from JavaScript
- Call C/C++/C# functions from Unity C# scripts
- Compile a static library as a Unity plug-in
- Create callbacks between Unity C#, JavaScript, and C/C++/C# code
- Replace deprecated browser interaction code
- WebGL native plug-ins for Emscripten
- Memory in Unity WebGL
- WebGL graphics
- Audio in WebGL
- Texture compression in WebGL
- Embedded Resources on WebGL
- Input in WebGL
- Configure a WebGL Canvas size
- WebGL networking
- WebGL performance considerations
- Debug and troubleshoot WebGL builds
- Building and distributing a WebGL project
- Windows
- XR
- Unity Search
- Glossary
- Platform development
- Android
- Getting started with Android
- Android environment setup
- Install dependencies
Install dependencies
Install required dependencies to develop your Android application in Unity.
To set up your Unity project for Android development, you need to install the required dependencies which are Android Build Support, SDK, NDK, and JDK. Unity distributes these dependencies as modules which means you must use the Unity Hub to install them.
Install modules
You can install the modules in two ways:
- During installation of a new Unity Editor version. For more information, refer to Downloading and installing Editors and modules with the Unity Hub.
- By adding them to an existing Unity Editor installation. For more information, refer to Add modules.
The three modules to install are:
- Android Build Support
- Android SDK & NDK Tools
- OpenJDK
Unity installs Android SDK & NDK Tools and OpenJDK respectively in the SDK, NDK, and OpenJDK folders under /[EditorVersion]/Editor/Data/PlaybackEngines/AndroidPlayer/.
Additional resources
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Copyright © 2025 Unity Technologies. Publication Date: 2025-05-01.