On its own, the music, the art and the game might seem odd, but you made a really impressive job in combing all of them together to make truly captivating game! The music was kind of random, but it worked for the style of this game, making it more intense and crazy. Although you had a pretty clear tutorial before the game begins, I still needed some time to figure out what to do. I guess you can add more visual or sound feedback to show the player that he fills the hole/collects the energy etc. Make more levels with it, and you will have a truly funny game!