Though some variations may use multiple decks or jokers, the game usually uses a standard 52-card deck and can be played with two or more playerslots pay by phone bills. The allure of rummy is its adaptability and simplicity; it can be played competitively in tournaments or casually among friends. Gin Rummy, Indian Rummy, and Kalooki are just a few of the many variations that have developed over time, each with its own set of guidelines and tactics.