In-game currencies

There are 3 different in-game currencies: Gold, Crystals and Gems.
Gold: As one of the in-game currencies, you can use Gold to buy new in-game cards.
You can earn Gold by:
  1. 1.
    Successfully completing a level.
  2. 2.
    Completing quests or achievements.
  3. 3.
    Winning in Raid mode.
  4. 4.
    Playing Challenge mode.
  5. 5.
    Achieving a place in the top 100 players at the end of the month (monthly leaderboard).
Crystals: Crystals, generated by crystallizing cards, serve as in-game currency for card upgrades, fusions and the «blochainization» feature. You can also exchange unwanted in-game cards for Crystals through the irreversible process of «crystallization». To crystallize cards, visit the team screen, tap «crystallize», select the cards you wish to crystallize and then press «collect».
Gems: Gems, obtainable through purchases in the Shop, are another in-game currency. They serve two main purposes: refilling your stamina and acquiring cards with a guaranteed higher rarity than when using gold.