Any player who wants to succeed at rummy must comprehend the fundamentals of the game. The ideas of sets—three or four cards of the same rank—and runs—three or mslots offersore consecutive cards of the same suit—must be understood by players. Also, the game presents the idea of "going out," which is the result of a player successfully melding all of their cards. Although house rules can affect scoring, players typically receive points for melds & penalties for unmelded cards in their hands.