Each week a new event, called a Season, occurs. During this season, clans compete against one another to get the highest leaderboard scores and earn valuable in-game prizes. Prizes are awarded at the end of each week's season.
The goal is to take as many trophies as possible from a defending clan.
Each season runs for several days. In each day, several time slots are available (the same number each day.) The clan leader sets the schedule by selecting which time slots will be used during that day's Clan Wars.
No clan may be attacked more times than the total number of time slots in one day.