Rummy continued to develop throughout the 20th century, leading to a plethora of adaptations and variations. An important turning point inall rummy app 51 bonus the history of the game was the introduction of Gin Rummy in the 1910s, as it quickly established itself as a mainstay in American homes and was even made popular by famous people. Because of its ability to combine skill and chance, players of all ages can enjoy this game.