Boosters are special elements or power-ups that help you beat match-3 levels. Here is the list of boosters currently available in the game:
Lightningbooster. Start the level with a Lightning already on the field.
Double Bomb booster. Start the level with two Bombs already on the field.
Lightning and Dynamite booster. Start the level with a Lightning and Dynamite already on the field.
Hammer booster. Remove a tile by smashing it with the Hammer (only becomes available once you’re already playing a level).
Swapper booster. Swap any two pieces on the field (only becomes available once you’re already playing a level).