Canasta is a card game of the rummy family of games believed to be a variant of 500 Rum. Although many variations exist for two, three, five or six players, it is most commonly played by four in two partnerships with two standard decks of cards. Players attempt to make melds of seven cards of the same rank and "go out" by playing all cards in their hands. It is "the most recent card game to have achieved worldwide status as a classic".

A card game is any game that uses playing cards as the primary device with which the game is played, whether the cards are of a traditional design or specifically created for the game (proprietary). Countless card games exist, including families of related games. A small number of card games played with traditional decks have formally standardized rules with international tournaments being held, but most are folk games whose rules may vary by region, culture, location or from circle to circle.