Absolutely love the visuals, sound, and overall atmosphere of this game! Puzzles were really interesting but never felt unfair or too challenging.
One very minor comment I have is that the instructions in the tutorial were a little confusing, particularly related to overlapping squares and using X's to cross out squares. Having finished the game I now understand what these were trying to teach me, but while playing the tutorial I thought they were more complicated puzzle mechanics being introduced, rather than providing me with a strategy to help solve the puzzles.
Overall though, amazing game, I had a great and very relaxing time playing it! :)