First of all I must say that the game was a great surprise, I'm loving it and I've already played several times already.
Regarding the feedback: Something that bothers me a bit is that the game is very short and once I've finished it a few times, well, there's nothing new to make me come back... if you're not into the Leaderboard thing there's no incentive for the player to play again tomorrow.
The art is superbe! and the sound and music is great too
Congratulations for this well crafted game!