Social Gaming Network (SGN) has raised $2 million in second round funding from Tomorrow Ventures and Xing founder Lars Hinrichs. The company’s first round of financing was for $15 million in May 2008, from Greylock Ventures, Founders Fund, Columbia Partners, and Novak Biddle Venture Partners.

SGN has concentrated on iOS titles like Skies of Glory, Mafia, Agency Wars, and Vampires vs. Werewolves. The company is looking to expand into games on Facebook and MySpace, and then onto Android.