I really loved the mechanic of the game, and the level design was very good, only with occasional setbacks, though it was addictive to get past it! Your implementation of the theme, I thought was kind of backwards: more is less, but it was good anyway. However, I was forced to rate MUSIC at one star as there was none. Overall, more polish and, maybe, slightly nicer visuals could have improved my experience. The tutorial in the beginning was also good.