Scenes
Overview
In Unity, Scenes are where you put all of the objects of your game.
In Unity, Scenes are where you put all of the objects of your game. They can be used to create a main menu, individual levels, and anything else. Think of each unique Scene file as a unique level. In each Scene, you will place your environments, obstacles, and decorations, essentially designing and building your game in pieces.
When you create a new Unity project, your scene view will show a new Scene. This is an untitled and unsaved scene. The scene will be empty except for default objects; A main camera and light.
Saving Scenes
To save your scene, go to File>Save Scene from the top menu. Your scene will be saved as an Asset in your Assets folder and appear in the project window.
Open A Scene
To open a scene, double click the scene asset in the project window.