Bonuses can help you solve tricky levels. Tap the button of the desired Bonus during the game, then select single tile to apply the Bonus. There are two types of Bonuses:
This magic power can clear a single Roomie, break a single Goo, Ice, Flower, Flask, Key tile or Skull.
Change any normal Roomie into a Power Roomie of the same color.
If you run out of Bonuses, you can always purchase new ones for Gold. Simply tap the button of desired Bonus type.