Originally, I found this game well made, but boring. I also found that the computer, regardless of difficulty class, could be defeated repetitively by a specific set of moves, this is most obvious in 1v1, where you can simply dodge the computers first charge and win, every time if you do it right, or worse, simply charge right at rhe computer hit it 2-3 times and be done.
A game that is not challenging is boring.
But then, I had an epiphany, what if I tried playing with TWO balls! My goal became thus: to, while controling one ball with each hand, knock off every computer controlled ball, whilst not losing either of my balls. By adding in the additional challenge of multitasking with two balls, The game has become quite interesting.