Version: 2021.3
Creating, loading, and saving Scenes
Set up multiple scenes

Work with multiple scenes in Unity

If you need to create large streaming worlds or want to effectively manage multiple scenesA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
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at runtime, you can open and edit multiple scenes in the Unity Editor simultaneously. Having multiple scenes open at once also lets you improve the workflow, especially if you often have to edit scenes collaboratively.

Topic Description
Setup multiple scenes How to setup, view, and edit settings with multiple scenes in your project.
Bake data in multiple scenes How to bake lightmapsA pre-rendered texture that contains the effects of light sources on static objects in the scene. Lightmaps are overlaid on top of scene geometry to create the effect of lighting. More info
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, NavMeshA mesh that Unity generates to approximate the walkable areas and obstacles in your environment for path finding and AI-controlled navigation. More info
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data, and occlusion cullingA that disables rendering of objects when they are not currently seen by the camera because they are obscured (occluded) by other objects. More info
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data in multiple scenes simultaneously.
Use scripts to edit multiple scenes How to edit multiple scenes with scriptsA piece of code that allows you to create your own Components, trigger game events, modify Component properties over time and respond to user input in any way you like. More info
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, through the Editor or at runtime.

Additional resources

Creating, loading, and saving Scenes
Set up multiple scenes