Not bad, but could use a few tweaks. I've played a lot of Breakout games in my life, and this is nothing great, but it is a little different. One, show the mouse on the screen or have it work off the game. It's better if you know that you are about to lose focus so you can readjust. Two, the power ups fall too fast to catch, or if you don't want them, you don't have time to react to not catch them. Three, the ball should not bounce into the score. It's hard to tell where it is going with the score in the foreground. Finally, give a second or two for the ball to be aimed AFTER the board is drawn, so we have a better idea of where to aim at the beginning. That is all.