History of the board game Monopoly US and UK the year before World Championships through 2003–2004 but during the same year as of 2009 (see table, below). The determination of the US champion was changed for the 2003 tournament: winners of an Internet-based quiz challenge were selected to compete, rather than one state champion for each of the 50 states. The tournaments are now typically held every six years. In the past, the US edition Monopoly board was used at the World championship level, while national variants are used at the national level. Since true international play began in 1975, no World champion has come from
History of the board game Monopoly sole inventor of the game, but sought out an affidavit by Darrow to repeat his statements to the contrary, and thus bolster their claim to the game. Parker Brothers subsequently decided to buy out Magie's 1924 patent and the copyrights of other commercial variants of the game to claim that it had legitimate undisputed rights to the game. Robert Barton, president of Parker Brothers, bought the rights to "Finance" from Knapp Electric later in 1935. "Finance" would be redeveloped, updated, and continued to be sold by Parker Brothers into the 1970s. Other board games based on a similar principle, such