Learning Rummy: An All-Inclusive Guide Rummy is a well-known card game that has fascinated players for centuries all over the world. The fundamental idea of the game is to use a standard deck 213of cards to create sets & sequences. Merging cards into legitimate combinations—which can be sets of three or four cards of the same rank or sequences of three or more cards in the same suit—is the goal. There are several variations of the game, such as Gin Rummy, Indian Rummy, and Kalooki, each with its own set of rules & subtleties. The game can be played with two to six players.