On the home page, you will see a Piggy Bank icon. For every ball you get into the hole, 50 gems will be deposited into the Piggy Bank. Once it reaches 300 gems, you can choose to open it or continue filling it up to its maximum capacity of 500 gems.

After opening the Piggy Bank, it will reset, and you can refill it again. Within 7 days of activation, you can fill and open it up to 10 times.

The Piggy Bank fills up when you play in any game mode. When in Stage mode, it fills up only in the highest stage you’ve unlocked.