First of all, I HAVE Googled this question in a lot of different ways. I have only seen people saying “Currently there is no way to save a scene outside the editor.” or the equivalent. But I would like some advice on saving the scene as one file or how to make a custom file type that I can use like a .scene file.
What exactly are you looking to do? Something like dynamic maze generation like in Diablo? If so there are several assets in the asset store that you can look at.