# In-game currencies

There are 3 different in-game currencies: Gold, Crystals and Gems. 

<mark style="color:yellow;">**Gold**</mark>: As one of the in-game currencies, you can use Gold to buy new in-game cards.

You can earn Gold by:&#x20;

1. Successfully completing a level.
2. Completing quests or achievements.
3. Winning in Raid mode.
4. Playing Challenge mode.&#x20;
5. Achieving a place in the top 100 players at the end of the month (monthly leaderboard).&#x20;

<mark style="color:purple;">**Crystals**</mark>: 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».

\ <mark style="color:blue;">**Gems**</mark>: 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.