The Complete Guide to Rummy: Background, Rules, Variations, and More Rummy is a popular card game that has been played by millions of people worldwide since the early 1800s because of its rich history. Its beginnings are a little unclear, but some theorieglobal slotss contend that it might have developed from earlier games like Conquian, which is thought to have originated in Mexico. Because of its similar card-melding mechanics for sets and runs, Conquian is frequently cited as the forerunner of modern rummy. The game saw many modifications as it traveled across borders, giving rise to the various variations of rummy that exist today. Rummy arrived in the United States by the late 1800s & quickly became very popular there, especially among families & social circles.