played your game for a short while and noticed that even on hard frequently the computer missed easy hits. At first i figured that it was just the AI and disregarded it but then i started to notice that othen the ball would be what appears to be on the paddle but not bounce off. I think that the code which tells if it hit the paddle is MINORLY flawed. Seems that the computer thinks it's within the proper bounce back boundaries but when the ball should hit it goes through.

-Lordoftools