Crystals are the currency of Flores. You can see the amount of crystals you have in the upper right-hand corner of the screen. You can spend crystals on certain bonuses and items that cannot be purchased with gold or resources:
- You can speed up construction and upgrades with crystals
- You can purchase additional turns and time when completing levels, as well as get boosters, resources and energy
- Some of the useful items at the store can only be purchased with crystals
There are several ways to get crystals:
- You get some every time you level up
- You can buy them at the bank. To open the bank, tap the crystals icon in the upper right-hand corner of the screen