My city is "Mos Eisley" and I am currently level 14. Its pretty fun to have a game on your phone where you can sink a few minutes a day on. I mostly spend my time collecting rent from buildings and do a few of the quests from time to time.
Saw another of my friends towns today and her town is WAY more elaborate than mine. She has a Casino and the Playboy Mansion. Its pretty cool to know you can at least keep it going to a certain point. She did mention that she hit the level cap I think it was 50.