Coins are are one of the main forms of currency in the game, similiar to Energy Drinks and Power Potions. Their main purpose is to Evolve or Enhance Cryptids or to enhance your Guild.
Coins can be gained in several ways. They can be won through battles with other players, through progressing through the main questline, or by progressing through event quests. Additionally, they can be obtained through trade with other players, usually in exchange for cards, Energy Drinks, or Power Potions.