By | November 09 2012 12:59 PM

Like its more dominant rivals at Facebook (Nasdaq: FB) and Google (Nasdag: GOOG), Yahoo! (Nasdag: YHOO) has also been struggling to transition its business to an increasingly mobile marketplace. On Friday, the No. 3 search engine in the world revealed plans to expand its mobile business by strengthening partnerships with two of Japan’s most established and successful mobile gaming companies, GREE (TYO:3632) and DeNA (TYO: 2432).