Why Monopoly is Part of the Games Timeline:
More About Monopoly:
The goal of the game is to force all of the other players into bankruptcy by buying real estate, building houses and hotels, and charging rent. The influence of Monopoly can be seen in game collections and retail stores all over the world -- more than 200 million games have been sold worldwide, and it's been been published in 26 languages.
By my estimation, Monopoly is also the most copied (both authorized and unauthorized) game published since 1800. Monopoly clones pop up all the time and are widely available.