How do I earn crystals?

You can get free crystals these ways:
- complete new chapters;
- regulary login the game to claim your free crystals in the Rewards menu;
- watch ads in the Rewards menu;
You can enter the Rewards menu if you tap on the icon with a present in the lower right part of the screen.

You can also buy crystals:
- tap the + sign near the crystals icon in the upper right part of the screen and choose the desired option.