It's one thing to "borrow" a broad concept -- for example, the falling block puzzle game familiar to many as Tetris -- when creating an iOS app, and it is quite another to directly steal or copy "style" elements such as wording, graphics, titles and so forth. Copyright and trademark law can help protect you, but -- at least so far -- Apple won't, Destructoid says as part of a series of articles documenting and shaming "rip-off" game developers.