From a technical perspective, all good. I've got some feedback on the UI and the UX:

UI: the customized icons in the table of content are a great addition in my opinion, they add a nice "theme-specific" touch, well done!

UX:

This welcome dialog could be more helpful, and gives too much unnecessary information.

Specifically:

1. The green part is ok, but it would be even better if, following the example of the Small Scale Template and other microgames, the welcome dialog had an additional "Bring me there" button that would open the scene for you. it's very easy to set up and makes the user journey way easier.
2. The red part is irrelevant when you see this popup. These are in-game instructions that simply add noise. They could be part of an introductive tutorial, but they have no purpose in the welcome dialog, because the purpose of the welcome dialog is to give you a presentation of the project and redirect you either to the main scene or to the first tutorial (if any).

What do you think, @Elfi0Kuhndorf ?

Thank you for the feedback Paolo! Regarding the first part, adding the bring me here button is a great idea. I will add that, it is definitely nicer for the user.
Regarding 2. I personally think it is not irrelevant as long as we do not have another introductive tutorial yet, additionally Client Driven right now has the movement instruction in the welcome dialogue as well currently.