You can see the star chests on the map screen, and they give boosters when unlocked. You can unlock them by collecting enough stars in levels on the island where the chest is located. Once you tap the chest, you will see how many starts are needed before the chest is unlocked. In case you have enough stars, tap “Open” and you’ll get a prize.
What are the chests on the map screen? How can I open them?
Last Updated: 163d