Learning Rummy 51: A Complete Guide Rummy 51 is a well-liked card game that incorporates strategy, skill, and a little bit of luck. Two decks of ordinary playing cards, including jokers, are usually play online casino slotsused for the game, which can have two to six players. Creating valid sets and sequences—that is, card combinations that satisfy certain requirements—is the goal. A sequence consists of three or more consecutive cards of the same suit, whereas a set consists of three or four cards of the same rank but different suits. Any player who wants to succeed in Rummy 51 must comprehend these basic ideas.