A GameObject can have many components, which are the building blocks of the game.

An object in the scene. Functionality is added using Components. A GameObject has a transform, which explains its position, rotation and scale, relative to its parent. It also has a name, and can be enabled or disabled. When disabled, the GameObject is still in the scene, but the components don't tick and are all disabled.

Allows creation of a system that always exists in every scene, is hooked into the scene's lifecycle, and is disposed when the scene is disposed.