The 3D sandbox idea sounds ambitious. Are you planning a simpler starter mode or guided first experiment so new players can learn the material interactions without feeling overwhelmed by all the systems at once?
It is. I had to learn a lot about coding efficiency in Unity to get it running.
I had not been planning something like that, but now that you mention it, it would probably be wise. For the moment, I have a tutorial covering how to use the game including an overview of the materials. But it is like 40 minutes long and I am not the most pleasing person to listen to haha. Thank you for the idea, I will work on something like that.