In essence, Rummy is a game in which players use their card hand to create legitimate sets and sequences. A run of three or more consecutlucky time slots - 777 casinoive cards of the same suit is called a sequence, whereas a set is made up of three or four cards of the same rank but different suits. Depending on the particular variant being played, the number of decks used may change, & the game can be played with two or more players.