I keep getting glitches.
Unfortunately, I ended up becoming too frustrated to continue with this game. Too frequently, the ball rolls over the walls and out of the game. I know that if it were working perfectly, the ball would not be allowed to do this. It's especially frustrating when you're doing everything correctly, and you lose because of a stupid glitch. It may be that the cracks in the walls allow the ball to glitch through. Whatever the reason, I can't enjoy this game unless you fix this.