The game base on "Bau cua ca" (Gourd-Crab-Fish) is a Vietnamese gambling game using three dice like as Crown and Anchor.

The six sides of the dice, instead of showing one to six pips, have pictures of a fish, a prawn, a crab, a rooster, a calabash gourd, and a stag. Players place wagers on a board that has the six pictures, betting on which pictures will appear. If one die corresponds with a bet, the better receives the same amount as their bet. If two dice correspond with a bet, the better receives two times their money. If three dice correspond with a bet, the better receives three times their money.