If you are up for a huge challenge, go to http://deathball.net/notpron. It is a huge riddle that you have to solve through. Right now I am on level 9, and I only have half of the clues I think. It is a game where you have to use every bit of information that you can, and that includes things in the pictures, the title bars of your browser, the URL, and even the source of the pages. It is really hard. Let me know what level you get to, and good luck!