In an attempt to arrest MySpace’s ever-faster decline into irrelevance, News Corp. is transforming the social network into an online gaming destination.The company, owned by media mogul Rupert Murdoch, had to do something, after all, once MySpace lost major ground to Facebook in June, posting smaller U.S. numbers than the latter — Comscore reported MySpace had 68 million compared with Facebook’s 74 million uniques (just from the U.S. Internet audience, the gap is even wider when looking at worldwide figures).News