Zynga, the company behind popular Facebook games such as Farmville and Cityville, is expected to have its initial public offering before the end of the year. Zynga is a phenomenon. More than 200 million people play its games each month. One person who doesn't feel Zynga's success is cause for celebration is video game designer Ian Bogost. Bogost thinks Zynga's games are mindless, designed to suck money out of players' pockets. To make his point he created a parody game of his own. As On the Media's P.J. Vogt reports, what Bogost didn't expect is that his satire would become one of the most popular games he's ever made.