Great game, adorable art. This fits in the theme in a way I would have never imagined.
For the negatives, I found that being "aligned" with some objects can be quite tricky. Not a lot though. It may also be just my own experience with it, but it feels like sometimes a grid based movement would have been better, for pulling rocks etc.. I also managed to get stuck into walls because the rock pulled, pushed me into it.
The visuals and the audio feels very well combined together, it makes such a unique atmosphere.
Puzzles designs are quite simple, though I enjoyed them a lot!
Overall a quite impressive amount of work, good job!