You have the glitches being worked on. All I can say is that the "Main Menu" button in the Instructions should be moved up some. Also, I got bored of it quick since the ball moved so slow after adding on all of the "slow ball" powerups. However, I do find it funny how everything slows down except for the player.
Good game. I think the game can run smoother though. It seems like the game shops sometimes. Could just be my eyes, but I think it's a good idea to look into that.