Like treasured postcard collections, albums are collections of the beautiful cards collected on the Pet Master adventure. Each album is made up of nine different card sets which, in turn, are each made up of nine cards that follow a similar theme.
Completing a card set can be done in several ways. Opening chests from their various sources is the base of these methods, but cards can also be obtained by trading with friends or won in different events! Keep in mind that the cards, sets, and albums unlock at different villages, so keep on moving forward to uncover those hidden treasures!