Los Angeles-based Twistbox Entertainment today is announcing that it has acquired all of the assets of Infospace's U.S.-based mobile game studio. The studio, located in San Mateo, California, provides prize-based games and promotions for consumer and entertainment brands. Financial terms of the deal were not disclosed. The studio was formerly known as Atlas Mobile. Twistbox develops J2ME, DoJa, BREW and Symbian titles for mobile devices.