Well..
I enjoyed the game very much. However I do have some comments.
I don't know about anybody else, but This game seemed to have rediculous lag for me for no apparent reason. Pretty much as soon as the game started speeding up with more balls things started moving very jerky. My suggestion for that is simply to add a quality setting, or to leave that in the right click menu.easy fix. But as you can immagine lag in a game like this is pretty much instant death.
i also did notice, as Lukarnis had mentioned, that reappearing after death can really kill you quickly. I think what would be a better solution there would be if you gave a person a couple seconds to be invincible that would be great.
I prefer to have acheivements listed so I can know what I have to do to complete them. Unless they are all things that anyone playing the game would eventually do? I can't tell because I haven't unlocked them all.
My main thing again is the lag. A quality setting should fix that problem for myself and anyhone else who has noticed it. Keep up the good work.