Callbreak is a strategic trick-based card game played with a standard 52 card deck between four players. There are 5 rounds in a game. Players' sitting direction and the first dealer are selected before the first round begins. To randomize player's sitting direction and the first dealer, each player draws a card from the deck, and based on the order of the cards, their directions and first dealer are fixed. Dealers are changed successively in anti-clockwise direction in the following rounds.