You just need to leave the city you are currently tied to, to start a new one. Any new city you help create you will always have the "key" to their city, which allows for free travel to that city for forever. So if we started a city together you would always be welcome to my city free of roc feather charge. You would then be allowed to leave and then join a new city, while still retaining the key to mine. This is why there are people bragging about owning 40+ keys.I just started my oil well in Knightdale!!! I think we can start other cities even after becoming a member of one, right?