Following World War II, Rummy's popularity skyrocketed, & regional variations such as Indian Rummy and Kalooki emerged, each with its own set of rules and gameplay components that enhanced the overall experience. Varieties of Rummy The nmat slots not availablegame of rummy has many different variations to suit a wide range of tastes and ability levels. Gin Rummy is one of the most well-liked variations, usually played by two players. In order to minimize the number of points in their unmatched cards, players in this version try to form sets & runs. Since players must carefully manage their hands while anticipating their opponent's moves, Gin Rummy's strategic depth is found in its emphasis on deft drawing and discarding.