That was extremely fun to play and it's sad that there are only five level. The first ones were really quick and easy. The last one was a bit mind boggling but still.
The concept is really really cool and i would have loved to see more than just five level.
The audio is also beautiful and just fits in with the pace of the game.
The art is really cute but i think something more cartoon-ish with outlines would have made it look a bit better. But thats just personal preference.
Otherwise there is not much to say except very good job and everyone should try this game out.