I am starting to REALLY like these! Some people say just conquer them and get the resources but that is certainly NOT always the best thing to do. In fact not at all especially the ones furthest from you unless you really want the city or desperately need the resources right now. In my current game, what I decided to do is go down the Patronage Socials. Once you get some of these policies, you start getting all kinds of bonuses while dealing with the city states. I was getting great people, units, and I was giving units to them. For example, Japan was on another continent with about 8 (or more) different city states. Then they started to conquer them, one after another. After a few turns, they took 2 of them over and the other 6 formed an alliance and declared war against Japan. A message came up and said something like do to Japanese aggressive nature, they all formed up and declared war. This was too cool because not long after that the Japanese capital fell to another world power (forgot who the clown was I am tired and its going on 3am... I think it was augusta) from being weakened from the war with the states. That same "clown" as I called him is now just going crazy, taking over everyone. So I started giving units over to some of those overseas states. Doing this, I don't have to actually go to war with a major power. I can just hand over units to the city states so they can hold off the giant and keep him from getting too strong. I been doing this for several turns, giving units to all sorts of states. Some I even signed a protection pact with and that helped to keep others off their back. So I give a unit here and there to slow them down from taking them all over, stay out the wars overseas and keep cranking the techs and gold. There was even a state on the other side from america who was my neighbor. America decided to get greedy and I did not want to see them with that state and become bigger and stronger. So I gave that state like 6 elepants and that held off america and weakened them. Since I done that, I may actually be able to conquer them now. Nevertheless, this was indeed a lot of fun. I think city states made an awesome addition to the game, play for a while and see what I mean. At first I was not sure, they seemed ok but now I think they are awesome and add a lot of options to the game. I think some people should play around with these a little more and see what fun they really offer. Certainly makes the world more interesting.