This game is great! The difficulty curve seems a little rough, as I figured of the first puzzles pretty quick but was stuck at the seventh one, but that's probably just me being dumb :), the Skip System is great bc it doesn't tell you the solution and therefore leaves you unsatisfied, which makes you come back to try again. The levels are beautifully presented and I really like the symmetry in a lot of them that works great with the puzzle (although , the perspective the game pretty unplayable with WASD makes as many other comments already pointed out) but I gotta give you a lower rating in audio and graphics cuz you did use some assets.
I'm very impressed how much you got out of that one simple and relatively straightforward and often used mechanic. You took the theme very literal and it works great! Well done!