The history of Monopoly can be traced back to 1903, when a Quaker woman named Elizabeth (Lizzie) J. Magie Phillips created a game through which she hoped to be able to explain the single tax theory of Henry George (it was intended to illustrate the negative aspects of concentrating land in private monopolies). Her game, The Landlord's Game, was commercially published in 1924. Phillips herself patented a revised edition of the game in 1923, and similar games of this nature were published commercially.
Charles Darrow is known to have played an Atlantic City variation of Monopoly, created by his friends, the Todds, who lived in Philadelphia. He became unemployed in the 1929 crash and decided to sell copies of the game taught to him by the Todds. He launched it in 1933 and it quickly made him rich. In 1935, Parker Brothers bought the rights from Darrow and started manufacturing a slightly updated version
Since the game was created, more than one billion people have played it, making it "the most played
(commercial) board game in the world