Boosters are bonuses that give you an immediate advantage at the start of a level. Before the start of a level, you can choose the boosters you need, and they will be placed on the game board when you enter the level.
There are three types of boosters:
bomb—leaves dynamite on the game board, which blows up an area of 3x3 cells;
star—blows up all gems that are located in the same row and column as it is on the game board;
lightning—leaves lightning on the board, which breaks all the gems of one color on the board.