Understanding Rummy Jack: A Complete Guide Rummy Jack is an engaging card game that incorporates aspects of classic rummy with special twists that deepen its strategic complexityrummy ola. The goal of the game is to create melds, which are combinations of cards that can be either runs (three or more consecutive cards of the same suit) or sets (three or four cards of the same rank). The game is usually played with a standard deck of cards. Because it can play with two to six players, the game can be used for both small and large groups.