Facebook Apps
Its a game of selling and buying stocks (such as cars, hotels, Coffee Shop Chain, Clothing Store, Media such as the paper, Soccer Team and so much more)
And its really like the real stock market because everything changes like every ten minutes, and the goal of the game is to buy low sell high, but its hard because you don't know the average price so people make price charts.
But yea if you don't use it I would highly recommend it, and if you do play it or just starting tell about your experience, its really like playing the slots because you win some times and lose others.
Have fun
http://apps.new.facebook.com/beatycoon