Opening really hooked me, with amazing music. Unfortunately, the music only played during the loading screens and menu, and not during the puzzles. The controls worked well, but the puzzles were either very simple, or seemingly unsolvable. Sometimes the level would just end, and load the next level. On level 6 it would then enter an infinite loading screen (did allow me to hear the good music in it's entirety.)

Also, the menu has a quit option, but I didn't find a way to quit out of the levels themselve.