@iooioio Thanks! Sorry, I didn't get (or missed) the notification of your message.
The asteroids one is playable, but the others are only what you can see in the screenshots, i.e. just enough to test the asset creation / level design techniques. The 3D ones have a basic (buggy) ability to walk through in first person.
But I could combine the four tests into a project and put it, and the asteroids project, up on a couple of repos if you'd like to take a closer look?
Merveilles is a community project aimed at the establishment of new ways of speaking, seeing and organizing information — A culture that seeks augmentation through the arts of engineering and design. A warm welcome to any like-minded people who feel these ideals resonate with them.