The sounds effects and animations made me want to keep playing even though it is an early version. Regarding puzzles, I ended up brute forcing the first two, and then started to get an idea about it. Sliders don't stop at every level, which I think is intended, but that made the movement of sliders a bit difficult sometimes. I think that is because I didn't know it wouldn't stop here, and I have to take it to the next point.
With some smoothing on the input and polish, this would be a very immersive game that people will want to play in a quiet setting.