Scrabble and Tetris are actually trademarked names and have official applications as far as I know. They can sue any competitor for trademark infringement. There are competitors like "Block Puzzle," but they may predate the official Tetris for presence, but I'm not certain on that.
> "What’s even less surprising is how (little) Apple apply their Guidelines when it comes to their own apps" (from post)
Actually, I think any resemblance is forced (particularly with the Translate app) and that the design decisions are more logically-based than copying. How else would you make a Translate app by Apple look?