Nice game,
It still has a few bugs. The ball got stuck twice on Lv 2, on the horizontal platforms. Either reset the ball after a certain time, or make a reset button. Another bug was, completing the stage with the last ball would still make you lose, since you 'have 0 balls remaining'.
Besides that, the ball moves kinda slow, which makes it kinda long and boring to watch the ball hit stuff and then fall down...