I'm actually pretty impressed by this. I wish real time shadows were turned on by default though. This has a surprising amount of depth and polish. Love that it has wheel support.. I'd love to see VR support in the future. Not sure why so many of the reviews are negative.
I love this concept, really reminds me of Phun/Algodoo which I enjoyed a ton in my childhood. Shows a ton of promise but I did experience a major bug where none of the objects would render, I could only see the "X" buttons.