Auto-boot your Unity game when entering Play mode

I am working on a game. There are a lot of games like it, but this one is mine.

TL:DR; The code is at the bottom ;)

Early on in development, I decided that I would split the game up into distinct scenes, and load each scene when I needed it. The alternatives would be to create one scene and have everything inside it, or create lots of prefabs and load those when I need to. But I chose not to use those alternatives.

So that meant that I created scenes that you may remember, such as “Bootstrap”, “Game”, “Credits” and so on.

The Bootstrap scene takes care…