Just after adding World 4 to Balls Breaker I couldn't stop and I added next new world... World 5! In the same update I have changed the balls skin in World 4 (yeah, now World 4 is much more original :)). I also fixed (oh, I really hope that I fixed it...) some of the crashes.
So, let's play Balls Breaker! I am going to add more features in the next updates :)