O.k
It will be alot better with some sound for instance when the black balls hit the white one.Maybe add different modes?Maybe add some bonus levels where the white ball is bigger or smaller than usual and a timed modus.Add different speeded balls i.e Black = 1;Blue = 5, etc. I think a big bounus would be if you include little extras which you can pick up with the white ball.As an example = If you pick up a green box it´ll slow down the other balls and a red box would make the white ball move faster.
Make the controlls variable= Keyboard AND Mouse.
I hope i was somesort of an Assistant.
I don´t normally type this much, but this game has potential!