Instead of waiting for an opponent to go out first, players in Gin Rummy can knock when they think they have a strong enough hand to win, which adds another level of strategy because they hrummyleaderave to choose when to stop the round. Indian Rummy, which frequently uses two decks of cards and requires players to form at least two sequences—one of which must be a pure sequence devoid of wild cards—is another fascinating variation. Because players must navigate through more cards while meeting certain melding requirements, this variant adds another level of complexity.