Love this game! The theme was very prominent in gameplay and the graphics were nice too.
However, there were three things that stuck out. Firstly, the controls were only arrow keys. Adding in WASD or spacebar into the input map would have been easy and made the game more fun. Secondly, I did not know which difficulty was recommended for beginners: I tried easy mode and found it very very difficult. Finally, the puzzles were restrictive: if you could not finish a puzzle, then you could not procede to some of the later lvls. This was a majpr drawback: I almost quit the game on lvl 4 cause I got so frustrated at my lack of gamer talent.
The implementation of the theme, the use of simple but effective graphics, the differing noises when touching different blocks, and the very cinematic ending (so emotional) were all my favorite parts of this game. I could see this game being developed for mobile with a bit of touching-up.
Overall, fantastic game! You clearly put a lot of work into it and you created a fantastic product!