One of the earliest variations of the game is Conquian, a card game played in Mexico that is comparable to rummy today. Playing runs & sets of cards are all.rummyamong the similarities between it & rummy. Many variations of rummy with unique rules and strategies arose as the game became more and more popular around the world. With the game's transition to online platforms, players can now compete globally, it is also commonly played in homes and social gatherings.