Oh yeah! I made this mega military police state that completely annihilated the Inca civilization. I wouldn't have, but he claimed war on me for no apparent reason. Several times he offered me lots of money and skills to stop... but I just ignored it and continued tearing him apart one city at a time :D
I like the game for the most part, but it gets to the point where I've been playing for several hours and begin to maintain my civilization more than expand or achieve anything. it gets monotonous and somewhat boring... But we'll see how that goes.