Variety of Rummy is a popular card game that can be played with two or more players. GIN and Canasta are two of the most popular variations of the game. GIN is a two-player game where each player tries to form sets and runs of cards, while Canasta is a four-player game where players try to form melds of seven cards of the same rank. Both games involve drawing and discarding cards in order to form the best possible hand.