Palo Alto, Calif. - Social Gaming Network (SGN), a developer of social media games whose titles include "Warbook" on Facebook, announced on Tuesday that it has raised $15 million in its first round of funding, led by Greylock Partners, Founders Fund, Columbia Capital and Novak Biddle Venture Partners.

New York - OLX, a provider of free online classifieds in the U.S. and abroad, has raised $13.5 million in its second round of venture capital financing, PEHub.com reported.

Berkeley, Calif. - Project Agape, which is developing "a platform for large-scale political and social activism on the Internet," has raised $5 million in its second round of venture capital financing, PEHub.com reported, citing a regulatory filing.

San Francisco - Zivity, a subscription-based social network where models and photographers can post "professional-quality photography promoting female beauty and expression" for members, said on Monday that it has raised $7 million in its second round of financing, from BlueRun Ventures and Founders Fund.

Southlake, Texas - Alamofire, a developer of casual games for social networks, has raised $2 million in its first round of venture capital financing, PEHub.com reported, citing a regulatory filing.

San Francisco - Quantcast, a provider of open Internet ratings for websites, widgets and videos, has raised $20 million in its second round of funding, led by Founders Fund and Polaris Venture Partners.