Some games, like Kingdoms of Amalur: Reckoning, as well as many software like Microsoft Office Word and Matlab, have "pre-welcome" screen right after its launch. It looks like a partly-transparent image. The "pre-welcome" screen of Word, for example, is just a small, simple window; however, for Matlab and those games, they are more than an image than a little window, especially when the image is shapeless, instead of being rectangular.
So, how can we achieve that?
So, how can we achieve that?