From the original Civ5 version of 2010, I was a little disappointed. Although I found the UI appealing, but the AI was - as already described several times by other reviewers - terribly bad, especially in tactical battles. With the successive enlargements "Gods and Kings" and "Brave New World", this fact has at least partially improved. In addition, the new game concepts are meaningful designed so that even after reaching the phase mitleren game pays no boredom. For me, the addiction factor has set in any case again.