If the folks from Facebook and Unity have their way, you -- and everyone you know -- will be playing mobile 3D titles directly on the social network. The two companies have been working together since March to boost user engagement with games on Facebook, and a cross-platform SDK released today should go a long way toward reaching a broader audience. Available for download via Unity's developer site, the new kit lets devs port their mobile games to Facebook.com and integrate social experiences -- such as posting achievements to your Timeline -- into cor
