The Complete Guide to Rummy Bo A fascinating card game that has become popular in many cultures, Rummy Bo has its origins in the larger Rummy super slots aggame family. Many historians believe that the Mexican game of Conquian is where Rummy got its start in the early 19th century. The game saw many modifications as it traveled across continents, giving rise to different variations such as Indian Rummy, Gin Rummy, and finally Rummy Bo.