Great Idea
But yeah as said before, it needs a little more work. The ball got stuck very often, just bouncing from a black stone to another one, and you yust couldn't do anything enymore.
Despite this i disliked the fact, that you just hat half of the window, and you sometimes hit the blocks of the PC so they were added on your side, and i missed some control of the ball, the only thing you could do was trying to hit it, but you couldn't "steer" it in any kind of way. Try to fix it, that the ball can not get stuck, and maybe the whole game would be better, if you do not put the enemys side by side, but one on the top an one on the bottom, with two different balls (one for each) so you could have the whole width of the window as your playground, and you wouldn't interfere with your enemys, in my opinion that would make a great game.