Social Gaming Network has just gone through a management shuffle. Chief operating officer Randy Breen, a gaming industry veteran who joined the company earlier this year, is the new chief executive. Founder and outgoing chief executive Shervin Pishevar is now the executive chairman.

The company has started as a Facebook game developer but has spent the last year or so focused on iPhone games. Those games have been downloaded 15 million times, the company says, and are on approximately one in every three iPhones.

Nonetization on the iPhone had until last fall relied on selling apps or running ads on them. But SGN and other iPhone gaming companies have a new and potentially big way of making money. Apple made it possible, starting in October, to sell virtual goods within free applications. SGN has since released virtual items for sale in free versions of some of its titles, including flight simulators F.A.S.T. and Skies of Glory. This year, it and other companies could see a lot of new revenue as a result.