[stonemetal]

I'm really surprised that people think consoles are currently a niche market for games

http://boardgames.about.com/od/monopolyfaq/f/copies_sold.htm

According to Hasbro, as of early 2008, more than 250 million copies of Monopoly have been sold worldwide. (As of early 2003, the estimate was "more than 200 million copies.") The company estimates that nearly 500 million people have played Monopoly.

Anyone want to guess how many decks of playing cards, or chess sets have been sold?

[eavc]

There are some very big numbers for the oldest and most classic video games as well. Take a look at the estimated numbers for Super Mario Brothers. Or the entire Mario franchise.