Kalyan Matka is a popular form of lottery and betting that has been around in India for decades. It originated in the 1960s as a form of gambling based on betting on the opening and closing rates of cotton transmitted to the Bombay Cotton Exchange. Over time, it evolved into a numbers-based lottery system. While many people enjoy playing Kalyan Matka for its excitement and potential rewards, the legality of the game in India has always been a subject of debate.