The Comprehensive Guide to Rummy Grand Rummy Grand is a contemporary take on the late 19th-century card game Rummy. Numerous gamewww.videobuddy.coms played in many cultures, such as the Mexican game of Conquian and the Chinese game of Mahjong, can be traced back to the origins of Rummy. Rummy has developed into many different versions over time, each with its own set of rules and strategies for play.