I really like the minimalistic style of this, and the puzzles were laid out really well so I could just focus on finding the solution without having to work out what everything does. I'd say my only small complaints are that for the platforming sections it was hard to tell where I was jumping, maybe a change of camera angle, or having the light source come from above to create a nice drop shadow could help with that, and this one's really minor but on level ten I couldn't tell what was blocking the button because the box that the key locks isn't on screen when you pick it up. Other than those small issues I really enjoyed it, and could definitely see myself playing a fleshed out version of this!