Rummy 500 is a dynamic game that requires players to continuously modify their strategies in response to shifting conditions and opponent moves. This keeps players interested throughout the entire game. An Ovslots 777 downloaderview of Canasta. The fascinating rummy variation known as canasta began in Uruguay in the 1940s and quickly spread throughout North America and Europe. Canasta, which is usually played with four players in two partnerships, uses two decks of cards & four jokers to create a complex game that requires strategy & cooperation. Forming melds, or "canastas," with seven or more cards of the same rank is the main goal.