History of the board game Monopoly to Magie is the concept of "ownership" of a place on a game board, such that something would happen to the second (or later) player to land on the same space, without the first player's piece still being present. A copy of Magie's game that she had left at the Georgist community of Arden, Delaware and dating from 1903–1904, was presented for the PBS series "History Detectives". This copy featured property groups, organized by letters, later a major feature of "Monopoly" as published by Parker Brothers. Although "The Landlord's Game" was patented, and some hand-made boards were made, it was
Camelot (board game) considerably more varied than checkers. Parker created a game that was a complex, tactical, but an easily learned and quickly played mixture of Halma and checkers. When finally published by Geo. S. Parker & Co. in 1887, Chivalry won the raves of chess and checkers experts, but the game Parker called "the best game in 2000 years" did not catch on quickly with the general public. However, Parker never lost his enthusiasm for the game, and in 1930 he made a few changes, and Parker Brothers republished it under the name "Camelot". A few more rules changes followed in 1931.