Your tweak as posted in the video may not be enough to prevent a boring loop. Mine would not make it past level one as it would leave a few bricks and simply go to the corner and just up and down lol. I boosted my randoms up some and that did not help… Then i also added negatives to it as well instead of 0 being the min range. That worked however I did find if you put the numbers too high you superman the game and your ball will eventually shoot right through your side wall =(. I placed my numbers for x (you dont need to change y unless you are mean haha) to about (-2f, 2f) and it works great you get some fast returns but not too bad.