Bleh. Obvious mobile game adaption. I don't think the music fits very well, or the audio in general. I would suggest changing the music to something more "flighty" the music as it is now reminds me of a cheap social Facebook game. I would also revamp the upgrade system or just get rid of it. None of the upgrades I saw really did anything for the game and having the items be a one-time use takes away from the incentive to collect hearts, especially since you can get the same items while playing.