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 of "house rules" as a possible variant of play. Electronic Arts, which publishes current electronic versions of the game, such as for the Nintendo Wii, also includes the selection of certain house rules. Unofficial versions of the game, which share some of the same playing features, but also incorporate changes so as not to infringe on copyrights, have been created by firms such as Late for the Sky Production Company and Help on Board. These are done for smaller cities, sometimes as charity fundraisers, and some have been created for college and university campuses. Others have non-geographical themes such as