Mumbai Matka, also known as Old main mumbai, is one of India's most famous and oldest gambling games, with its roots tracing back to the 1960s. It was introduced by Ratan Khatri, who is widely regarded as the Matka King. The game started as a simple form of betting based on the opening and closing rates of cotton traded on the New York Cotton Exchange. However, when the system was banned, the betting evolved into a number-drawing system, which became known as Matka. The term "Matka" translates to "earthen pot," which was initially used to draw numbers randomly, making it a symbol of the game.