I have "The Settlers VI - Rise of an Empire" equal on Thursday the add-on to secured and am fully satisfied. The new campaign boasts revised ideas and is also located in difficulty slightly above the main game. The new features such as additional ornaments or fountain complete the gaming experience. I am particularly impressed but from the trading post, because it saves a lot of work, the new climate, including monsoon, since these were not only beautifully designed, but also new tactical thinking requires, and the return of the geologists, since the otherwise scarce natural resources by those against rising wages can be revived.
So all in all a really successful add-on that can only be desired: hopefully coming soon another one.