Crystals are the in-game currency of Cradle of Empires, which you can use to buy anything you need. But you can still use your matching skills to get resources, chargers, bonuses, etc.
You can use crystals to do the following:
- Buy bonuses, spells, energy, chargers and resources in the shop
- Unlock new buildings
- Construct buildings, totems
- Upgrade buildings, totems
- Speed up clearing the ruins and construction of buildings, totems and idols
- Buy extra moves (or time) on match-3 levels
- Speed up the Ship sailing and excavation in the Cave
You can get crystals the following way:
- Level up your XP
- Earn Trophies
- Exchange stars for crystals on the maximum available level of the building
- Log in Facebook
- You can get crystals as a daily reward in the Wheel of Fortune
- Participate in contests on Cradle of Empires Facebook page
- Buy crystals in the Crystal Shop