This is an amazing game! A couple of things I would recommend are probably to make the ball hitting physics more based on the ball's velocity against where it hit, so if the ball was perpendicular to the paddle it would gain a lot more speed from the hit than if the ball just barely glanced it. This would probably only be good if the ball was going faster than some value, because then when the ball is rolling down to get hit slowly it would not hit very hard, but on the upper paddles when the ball got hit on the side it went flying to the side instead of only adding a marginal boost. The other thing is to add an animation when the ball gets hit with the straight bumpers, but at this point, I am just nit-picking. This was a great game and overall very fun to play. Great job.