A 52-card standard deck is used for playing 777 Rummy, a variation on the classic rummy card game that is usually played with two to six players. The main slots online with bonusgoal is to form sets and runs and be the first player to discard every card. Three or four cards of the same rank make up a set, whereas three or more consecutive cards of the same suit make up a run. Sets & runs must add up to seven or its multiples in order for 777 Rummy to stand out from other variations.