
Animation
Animation in the Unity Editor, including the avatarAn interface for retargeting animation from one rig to another. More info
See in Glossary system, animation clipsAnimation data that can be used for animated characters or simple animations. It is a simple “unit” piece of motion, such as (one specific instance of) “Idle”, “Walk” or “Run”. More info
See in Glossary, and state machinesThe set of states in an Animator Controller that a character or animated GameObject can be in, along with a set of transitions between those states and a variable to remember the current state. The states available will depend on the type of gameplay, but typical states include things like idling, walking, running and jumping. More info
See in Glossary.

2D game development
Unity Editor’s 2D-specific features including gameplay, spritesA 2D graphic objects. If you are used to working in 3D, Sprites are essentially just standard textures but there are special techniques for combining and managing sprite textures for efficiency and convenience during development. More info
See in Glossary, and physics.

Physics
Simulation of 3D motion, mass, gravity and collisionsA collision occurs when the physics engine detects that the colliders of two GameObjects make contact or overlap, when at least one has a Rigidbody component and is in motion. More info
See in Glossary.

Rendering
Choose a render pipelineA series of operations that take the contents of a Scene, and displays them on a screen. Unity lets you choose from pre-built render pipelines, or write your own. More info
See in Glossary and add your own rendering and post-processingA process that improves product visuals by applying filters and effects before the image appears on screen. You can use post-processing effects to simulate physical camera and film properties, for example Bloom and Depth of Field. More infopost processing, postprocessing, postprocess
See in Glossary.

Unity services
Unity services such as Monetization and Cloud Services, Ads, Cloud Build, and Multiplayer.

Visual effects
Add and customize particle, lens flareA component that simulates the effect of lights refracting inside a camera lens. Use a Lens Flare to represent very bright lights or add atmosphere to your scene. More info
See in Glossary, and full-screen effects.