Good graphics, audio and technical-wise (everything works smooth and as expected). I am feeling really ambivalent about the gameplay though:
On one hand it seems possible to influence the outcome by "following the averages", following where most balls seem about to land. And I was able to win once (I submitted the score to the Leaderboard and it seems that I am the only one:), and a couple of games later - survive until one-on-one and get "second place".
(In-between remark: you should make the paddle controllable with the mouse, so you have more control and can react/move-it instantly. Or at least, make it so that bots can't move paddles faster than you)
On the other hand, with so many balls at once, it seems like the game is still mostly "a game of chance" and skill plays a little role in it. "Following averages" doesn't seem very captivating, because there is no clear attainable goals.