For the Unity 3D project I am currently working. I am trying to learn how to implement a scene manager in Game to load difference scenes into the viewport.
Here is a screen of it its nothing fancy it just loads the different scenes into the Boot Scene.

https://www.twitch.tv/videos/977409327
Clip of the Game Manager in Action:
https://clips.twitch.tv/TangentialRefinedMeerkatVoteYea-A9a3PhlOOcoGVcyh
Next steps will be to record scores and track the game states.
Here are some tutorials on it.
https://unitycodemonkey.com/video.php?v=3I5d2rUJ0pE