The Detailed Study of Cash Rummy Games Rummy's foundations are thought to be in the Mexican game of Conquian, which dates back to the early 1800s. The foundation for later variations of Rummy, such as the cash variant, was established by this gasattaking resultsme, which involved combining cards into sets and runs. As the game expanded internationally, it saw multiple adaptations, with each culture contributing its own distinct twist. Rummy arrived in the United States by the late nineteenth century and quickly became very popular there. The game was changed from a recreational activity to a competitive activity with the addition of cash stakes, drawing players who were keen to pit their prowess against one another in hopes of winning money.