Contract Rummy is different from traditional rummy games in that it has several rounds with predetermined contracts that specify the necessary combinations for each rounlow-limit slotsd. This variation, which is commonly played with two decks of cards, can be played by two to six players, making it adaptable to a variety of group sizes. gameplay as well as strategy. Every round in Contract Rummy has its own set of melding requirements, which could include a set or run count that players must meet in order to leave.