The Super Rainbow Ball event is a regular event where you need to complete 10 levels without losing to earn a special power-up. It removes elements from the field not of one, but of two colors at once!

Once you activate the super power-up, you can use it until you lose a level. If you do, you'll need to clear 10 levels without losing again to reactivate the Super Rainbow Ball.

This ability to obtain the Super Rainbow Ball unlocks for all players who've reached level 290.