Parker Brothers wrote all the rules. Many games were based on important events of the day: "Klondike" was based on the Alaskan gold rush, and "War in Cuba" was based 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 became the best-selling game in the country. During the Great Depression, a time when many companies went out of business, Parker Brothers released a new board game called "Monopoly". Although the company had originally rejected the game
History of the board game Monopoly the demand for the game increased, Darrow contacted a printing company, Patterson and White, which printed the designs of the property spaces on square carton boards. Darrow's game board designs included elements later made famous in the version eventually produced by Parker Brothers, including black locomotives on the railroad spaces, the car on "Free Parking", the red arrow for "Go", the faucet on "Water Works", the light bulb on "Electric Company", and the question marks on the "Chance" spaces, though many of the actual icons were created by a hired graphic artist. While Darrow received a copyright on his game