Mastering Rummy Cash Game: A Complete Guide The combination of skill, strategy, and chance in the well-known card game rummy has enthralled players worldwide. The fundamental rummy walaidea of the game is to use the cards that are dealt to each player to form sets and runs. Three or four cards of the same rank but different suits make up a set, whereas three or more cards of the same suit in a row make up a run. The goal is to combine these combinations, and when you've done so, you'll "go out" by throwing away your final card.