George Swinnerton Parker Cuba" on the impending Spanish–American War. The game industry was growing, and the company was becoming very profitable. In 1906, Parker Brothers published the game "Rook", their most successful card game to this day, and it quickly became the best-selling game in the country. During the Great Depression, a time when many companies were going out of business, Parker Brothers released a new board game called "Monopoly". Although the company had originally rejected the game in 1934, they decided to publish it the next year. It was an instant success, and the company had difficulty keeping up with demand. The
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.