I have played Civilization 1-3 and Colonization and Alpha Centauri. The principle is again the same, but treated very differently. First of all, the graphic catches your eye, first already easy to get used to, but then brilliantly: I can screwing in the map and zoom out, know which fields are managed without having to go to the city view, and what wonders were built in a city , Furthermore, there is now a lower right display of all game parties, by double clicking on a name to get directly into the diplomacy or trade menu with the selected representatives of the people. So sensible improved navigation. Other new features: construction workers can now also create paddy fields, villages and farms to build, ie around a city is subject to other settlements, to which although I have no direct influence, but provide just more goods to the city, thus allowing better management of the field , Armies get promotions after successful battles, there is the aforementioned great personalities whose potential I have not yet fully recognized, but definitely bring new possibilities into play. There is now not only a handful of state forms, but almost covering different policy areas individual characteristics, for example. Slavery and mercantilism, which affect productivity, but also costs such as for armies. Religions are sequentially "invented", you can try to spread a religion as a world religion, or within its own realm, it is more advantageous if there is only one faith (at least until the discovery of religious freedom). So all in all: Proven principle, many innovations with strategic impact, offer up unused games and not just another rehash. Civilization IV is also pleasantly different as proven.