Based on regional preferences, player counts, & particular gameplay mechanics, the various rummy variations can be roughly grouped. Every variation offers a unique flteen. pattiavor, ranging from the traditional Gin Rummy, which places an emphasis on deft play & calculated discarding, to the more intricate Indian Rummy, which adds jokers and multiple decks. Other well-known variations, such as Contract Rummy and Canasta, appeal to a variety of audiences by adding more levels of intricacy and cooperation.