Quote Unquote is a unique, and challenging twist. Just like a crossword puzzle, you have to have a command of world trivia and knowledge to solve puzzles, plus use word search skills to solve the puzzle. You might be tempted to double click the home button, launch Safari, and get the answer through Google or other means! Maybe Siri can help! But try to solve it yourself and you'll feel a sense of accomplishment!
There are higher levels you can purchase within the app, but the entry level version can give you hours of entertainment. I'm still about halfway through the base version!