Playrix really needs to do some work on this level. The goal of the level is to combine 2 rainbow balls and do this 3 times. It's already insanely difficult to do. But to make matters worse, the paper airplane booster ruins your chances of completing the level because they will set off individual rainbow balls before you can combine them. The airplane boosters are supposed to help you complete levels, not ruin them! The developers need to make it so the airplanes cannot set off rainbow balls that are not encased in ice.