For both casual players and die-hard fans, Rummy is an interesting game because of its strategic depth and straightforward rules. recognizing the variations in rummy. There are nsavera gameumerous variations of rummy to suit varying tastes and skill levels, so it's not a single, monolithic game. Gin Rummy is one of the most popular variations, usually played by two players. To end the round and score points based on their opponent's unmelded cards, players in Gin Rummy try to form melds & "knock" when they think they have a winning hand.