This 52-card standard deck version of rummy is called 777 Rummy, and it is usually played by two to six players. The main goal is to eliminate every card by forming sets & runs before a100 spinny other player does. 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. The prerequisite for players to create sets and runs that add up to seven or multiples of seven is what sets 777 Rummy apart. As an illustration, a run could consist of 4, 5, & 6 hearts, while a set could have three sevens.