Monopoly holds the Guinness World Record for the best-selling commercial board game, with over 275 million copies sold since its 1935 Parker Brothers release (based on Charles Darrow's 1933 design, itself derived from Elizabeth Magie's 1904 The Landlord's Game).
Monopoly's combination of mass-market appeal, licensing agility, and generational nostalgia keeps it unchallenged at the top.