Boosters are divided into Bomb, Rocket, Rainbow, and Lightning. They can be obtained through daily spins, a chance by reaching many levels, or by purchasing.
These boosters can be found at the bottom of the level.
 
Here are some brief explanations about the items:
  • Bomb: Drop 20+ bubbles to charge the Bomb, Bomb explodes nearby bubbles!
  • Rocket: Pop bubbles 7 times in a row and get the Rocket! It blasts everything in its way
  • Rainbow: Rainbow bubbles can be matched with any color!
  • Lightning: Lightning bubbles remove a row of bubbles!