Learning Rummy: An All-Inclusive Guide Rummy is a well-known card game that has fascinated players for centuries all over the world. Forming sets and runs fromparty slots a standard deck of cards is the fundamental aspect of the game. Three or four cards of the same rank but different suits make up a set, whereas three or more cards in the same suit make up a run. The goal is to combine these combinations in order to reduce the number of points you have left at the end of the game.