The Club Booster increases the Club Contribution (XP) earned by all club members from playing games. Only Club Leaders can purchase and activate boosters. You can find them in the NEW Club Store tab or via special offer banners, using Club Coins. Leaders can buy and hold multiple boosters for later use.
Activating a booster starts a countdown timer, applying the XP bonus to the entire club immediately.

Important: Only the Club Leader can purchase or activate boosters.