Social games developer Zynga, which today announced it reached 100 million unique users for its online titles (FarmVille, Café World), could generate a value of $1 billion dollars if the company were taken public, according to a stock analyst predicting the studio's worth.

"If the IPO were timed to price around mid-2010 or later, our expectation would be for a billion dollar or greater valuation," said Terry Schallich, head of Capital Markets at technology-focused investment bank Pacific Crest Securities, in a report posted by financial news site Bloomberg.

The FarmVille developer's CEO Mark Pincus, however, said he has no immediate plans to take Zynga public, as it would distract the company from its current goals. He added, "Our mission is to accelerate our product development and business plan."

If the company were to launch an IPO with a $1 billion valuation, that would make the two-year-old studio the third-largest U.S.-based video game publisher by market valuation, under Electronic Arts and Activision. EA also made headlines with the social gaming sector earlier this month after confirming its $300 million acquisition of Zynga rival Playfish (Pet Society, Word Challenge).

Zynga announced last week that it secured $15.18 million in a Series C round of funding, bringing its total amount of venture capital raised so far to $54.1 million. The company's recent positive financing and userbase news comes in spite of controversy around its use of scam-like lead generation offers with its games, which prompted one law firm to file a class-action suit against the developer.