I think that this game has a fair scope and a well-structured progression. The first few levels aren't too difficult but allowed me to understand the core game mechanic enough to take on the harder levels near the end. The loop theme fits very well - especially on level 7 where looping the ball is essential to beating the game.
The implementation of particle effects and screen shake when the energy ball makes contact with other objects gives this game JUICE. It's very satisfying and has that replay factor. Well done!
