The Complete Guide to Rummy The card game rummy has been a favorite among players for centuries, dating back to the early 1800s. It is generally accepted that Rummy developed from a number of earlier card gamyolo slotses, including the Spanish game "Conquian," which is frequently mentioned as a precursor, even though the game's exact origins are a little unclear. Played with a 40-card deck, Conquian established the foundation for many of the features present in contemporary Rummy. The game saw several modifications as it traveled across borders, giving rise to the varied family of Rummy games that we are familiar with today.