Gambling is a side activity you can do with Marlo in Bavelock, and Porgel in Savina. You pay 10 Pix for the chance to win 20 Pix if you choose the right cup in a round of shell game. One coin is put under a cup in a set of three cups, and then all of them are shuffled. When they are properly shuffled you point out which cup the coin is now underneath.

During the main story of the game, you are forced to win a round of shell game with Leon to win the Tear of Neriah.

Gambling is a part of a sidequest in Bavelock. In the sidequest "Ace up my sleeve" Odessa wants you to win two rounds of shell games in a row against Marlo.