There are three types of boosters in the game: Star, Lightning, and Blast.
Boosters are items that help you complete levels and speed up your progress in the game. Boosters can be single-use items or infinite for a certain period of time.
Before starting a level, you may choose which single-use boosters to use. The single-use boosters you choose are applied once at the beginning of the level and placed on random gems on the board. The number of them you have then decreases.
You may also win infinite boosters for a limited period of time. In this case, they are chosen automatically before a level begins, and the number of boosters you have does not decrease. In addition, you may craft boosters during a level by matching gems in a specific way.