There are many variations of rummy to suit a range of tastes and ability levels, so it's not a single game. Gin Rummy is a well-liked variation that is usually played by two players and places an emphasis on making melds as fast as possible while reducing deadwood, or the unmelded cards that are still isaat king comn play at the end of a round. Players in Gin Rummy can "knock" when they think they have a sufficiently low number of deadwoods, which adds another level of strategy as they have to strike a balance between aggression and caution. Another noteworthy variation is Indian Rummy, where players must form at least two sequences, one of which must be a pure sequence (a sequence devoid of jokers), and which frequently uses two decks of cards. With this variation, players must successfully manage their hand size while navigating the complexities of forming multiple melds, adding complexity and strategic depth.