Duplicating Scene through Code


since I have some Runtime Modification going on I need to have a “Default Scene” which I copy when I load the level and then add to the buildsettings to load the copied scene.
Is there a way of doing that?

You can create an editor extension that does what you want. Have a menu item that duplicates your default scene and adds it to the build settings or even save your currently modified scene then add it to the build settings…

It sounds like you can use Application.LoadLevelAdditive to achieve what you want. It will take everything from the scene you choose and add it to the current scene.