In 1935, Charles Darrow was an unemployed salesman in Germantown Pennsylvania. At that time vast numbers of people in the United States were unemployed during the Great Depression, and there were no jobs to be had of any kind.
As Darrow got what odd jobs he could, he made a board game to play in the evening. Soon friends and neighbors were playing the game, in which every player could buy and sell real estate with names based on properties in Atlantic City, New Jersey. Not having any real money or chance to be real estate investors, the game gave the hard pressed people some diversion. Soon he was selling a few copies of the game to neighbors and to local stores. He was turned down by the large game and toy company Parker Brothers, because the game was critiqued as having 52 fatal faults in game design.
Darrow kept selling the game, and it was soon in department stores in the area. One customer who bought the game was the daughter of the founder of Parker Brothers, who recommened the game to her father. Parker Brothers changed their mind about the game and licensed the patent from Darrow. Darrow received a royalty for every game sold, and became a millionare from sales of Monopoly. Within a month of the licensing agreement, Parker Brothers was selling over 20,000 copies of the game per week.