Very creative and original.. But i do find it a bit too silent.. I wish there was a happy tone of music to fit it in the background.. yeah it was designed for smartphones.. but you could do better.. i found some puzzle games like pixelo (can be played on kongregate and on smartphones) have this happy tone of music.. though i did mute it some time, but when i played it with sound and music.. it's good. I recommend trying to add... epic music? XD or something with a retro themed game music.. somethng that sounds it was made with 8bit music but with some modern elements.. like techno/dubstep