Sterne Agee's David Bain also cited Boyd Gaming as a beneficiary, due in large part to its presence in Atlantic City. Boyd, along with MGM Resorts ( MGM), owns Borgata Hotel Casino & Spa. The analyst, who rates Boyd shares "neutral," did temper optimism, however, on the gaming space as a whole.

Zynga Q&A: Gambling, Facebook, Sinking Share Price

Caesar's (formerly Harrah's Entertainment), has exceptionally strong brands, including the World Series of Poker, which would play well with social gaming.

Hedge fund manager John Paulson cited Caesar's potential for online gambling at the Ira Sohn investment conference last year.

Shares of Zynga were higher in early Wednesday trading, up 2.98% to $3.46, while shares of Boyd and Caesar's jumped 6.46% and 4.37% to $6.92 and $12.66, respectively.

-- Written by Chris Ciaccia in New York

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