I find it really gorgeous and creative. Not sure why but the first time I click anywhere in the menu it goes full screen, but it's no big deal, I just press Esc and go on.
The game was brutally difficult for me, did not make it past level 7, also, I found some sort of bug that I'm not sure how to reproduce on level 7. Somehow I folded the exit and when I unfold it is now part of the wall.
I tried skipping levels into 18, didn't quite understand the 3D mechanics and I couldn't figure a way to solve that one either. It also glitched with some folds, making the circuits not connect anymore.
Overall this is a super cool puzzle, I wish I were better at it.