A Complete Guide to Mastering Online Rummy Online rummy is a digital version of the classic card game that has been played for generations. Rummy is fundajoy rummy luckmentally a skill-and strategy-based game in which players try to piece together legitimate sets and sequences using the cards they are dealt. Merging every card into these combinations before your opponents does is the goal. A standard deck of cards is used in the game, which usually has two to six players.