Players battle other players by choosing ranked or practice battles. With ranked battles, players can increase their rating. There is no downside to playing ranked battles as a beginner since players with a rating below 100 do not lose ranking points. Battles take place between players of similar strength. When matched up with an opponent, both players choose a set of six monster cards and one summoner card for the battle to destroy all their opponent’s monster cards and win the battle.
Although the game is free-to-play, players need to purchase the summoner’s spellbook for $10 if they want to unlock the game in full. With the summoner’s spellbook, players get access to their account keys and unlock the ability to earn Dark Energy Crystals, which can be redeemed for real currency.