OK, there's a good chance that this might be the weirdest (gambling) game you've seen for a while.. :P
All you have to do here is basically to watch five balls moving around the screen and invest your money in various gambling conditions generated by the game regarding future movements and collisions of those balls. Everyone has balls to gamble in this game!
It's not only about luck, though. By carefully observing the movements and learning to interpret all the information available (like forecasts on movement lines, next collisions and immortality areas), a skilled (and lucky!) player can turn the start-up capital of 2000 EU to even millions. Can you reach the "Club Million" of Green Ball Gambling? Have fun betting!