It's meant to give an intuition about what a 4th space dimension might feel like, thru self experimentation.

I’m guessing from the word “toy” in the name it’s intended as entertainment. I certainly think it’s fascinating and my mind boggles as to how the developer thinks of these shapes (especially for the “full” third person game)

> But seriously, what's the use of that? I don't get it.

About the same as the use of novels, music, paintings - stuff like that...