Components

An entity is just an ID and a name. Everything else it does comes from the components attached to it. Add components from the Properties panel in the editor, from a script with entity:Add<Name>(), or by writing them into a scene file - see Scene Files.

Core

Component	Scene element	What it does
ID	on <Entity>	The entity's unique ID, which stays the same across saves.
Name	on <Entity>	The entity's display name.
Transform	<Transform>	Position, rotation and scale.
Hierarchy	on <Entity>	Links an entity to its parent and children.
Hidden	<Hidden>	Stops an entity, and everything under it, from being drawn.

Rendering

Component	Scene element	What it does
Camera	<Camera>	The point of view the scene is rendered from.
Sprite	<Sprite>	Draws a textured or plain coloured quad.
Animated Sprite	<AnimatedSprite>	Plays a named animation from a sprite sheet.
Circle Renderer	<CircleRenderer>	Draws a filled circle or a ring, with no texture needed.
Static Mesh	<StaticMesh>	Draws an imported 3D model.
Primitive	<Primitive>	Draws a generated 3D shape: cube, sphere, plane, cylinder, cone or torus.
Tilemap	<Tilemap>	A grid of tiles drawn from a tileset, with optional collision.
Text	<Text>	Draws a string, in the world or in in-game UI.
Point Light	<PointLight>	A light that shines in every direction from the entity's position.
Billboard	<Billboard>	Keeps an entity facing the camera.

Physics 2D

Component	Scene element	What it does
Rigid Body 2D	<RigidBody2D>	Makes an entity a 2D physics body that can be moved by gravity, forces and collisions.
Box Collider 2D	<BoxCollider2D>	A rectangular collision shape.
Circle Collider 2D	<CircleCollider2D>	A circular collision shape.
Capsule Collider 2D	<CapsuleCollider2D>	A pill-shaped collision shape, made from two circles and a box.
Polygon Collider 2D	<PolygonCollider2D>	A collision shape with any outline you like.
Weld Joint 2D	<WeldJoint2D>	Holds this entity's physics body fixed to its parent's body.

Scripting & AI

Component	Scene element	What it does
Lua Script	<LuaScript>	Runs a Lua script on the entity.
Behaviour Tree	<BehaviourTree>	Runs a behaviour tree on the entity, for AI decisions.
State Machine	<StateMachine>	Placeholder for state machine AI.

Audio

Component	Scene element	What it does
Audio Source	<AudioSource>	Plays an audio clip from the entity's position.
Audio Listener	<AudioListener>	The point that sound is heard from, usually the camera or the player.

In-game UI

Component	Scene element	What it does
Canvas	<Canvas>	The root of a piece of in-game UI.
Widget	<Widget>	Position and size of a UI element, anchored to its parent.
Button	<Button>	A clickable UI element, with a different look for each state.
Stack Layout	<StackLayout>	Arranges child widgets in a row or a column.
Grid Layout	<GridLayout>	Arranges child widgets in a grid with a fixed number of columns.
Scroll Box	<ScrollBox>	Scrolls a single child widget that's bigger than the box.