Players are matched with an opponent from their league. Players will earn trophies for successfully defeating the enemy, but will lose trophies if they are defeated.
Winning battles earns exclusive multiplayer chests. The chance to obtain each tier of chest is dependent on the player's league (higher leagues having higher chances of obtaining a higher tiered chest). Opening a chest takes time or can be sped up with gems. Players have only 3 slots to open chests. Once they are full, any chests players earn must be discarded or opened immediately with gems. The table below displays the drop rates of each tier of chest at each league: Tier 5 has the highest chance of mythic cells, but tier 4 can have them too
Players must set an Attack Team and a Defense Team. The same monster cannot be used on both teams.
As player earn and lose trophies, their rank will go up and down and their League may change.
The higher the league, the better the rewards given at the end of the tournament. Check the Leagues section in the game to see that tournament's rewards.