The game experienced many changes as it traveled across borders, adjusting to the subtleties of local cultures. Rummy arrived in the US by the late 1800s & quickly became very popular theslots machine gamere, especially among social circles. The game became a mainstay of American leisure activities & was frequently played in homes and parlors. As rummy developed further, several variations appeared, each with its own set of guidelines & tactics. One of the most important turning points in the history of the game was the introduction of Gin Rummy in the early 20th century.