Contract bridge is a trick-taking card game using a standard playing card deck. Four players form two partnerships, sit facing each other. Each player may bid a number of tricks to take in excess of six, and a trump suit which would be the highest suit. The highest bidder becomes the declarer when all other players consecutively pass. After the first card is played, the declarer's partner opens all cards in hand face-up. The revealed cards are played by the declarer. The declarer side scores points according to the number of tricks they took.

This implementation supports Chicago, Rubber Bridge, Single Dummy Honeymoon Bridge, and Solitaire Bridge.