If you have ever played one of the larger more modern PC RPG games, to its completion, chances are you also purchased an add-on pack. I haven't always been the guy who champions add-on packs to games. In some cases, I simply think the add-on brings nothing new or particularly inventive to the original game. Others, like the Morrowind add-ons were designed to keep the overall story moving forward with new, vicious enemies and wildly different powers and scenarios. So since I had an honest-to-goodness good time playing Sacred, what exactly could I expect when I was asked to do the add-on; Sacred Underworld.