Challenges are another mode of play to battle and earn rewards. The Challenge available to play may change every few weeks - check the Special Events menu or Challenges island in game for more information.
At the start of a new Challenge Event, players receive Tickets which work like Energy to fight a Challenge battle. Each time you want to fight Challenge battles, you must use Tickets.
The Tickets will refill one by one and will take 24-hours to fully refill.
Ticket refills are also available in the shop. The cost of a Ticket refill will scale up with every purchase, and the cost resets once your 24-hour timer ends.
When you beat your challenge opponent you will earn a special currency called Wonder Wharf Coins, which can be spent on rewards found in the Challenge Rewards tab.
The Challenge battles get harder each time you win, but the rewards are greater!