
Originally Posted by
Shark2346
They did this in a previous Civ... Colonies, say unconnected cities (by border) in a continents game. You could make a certain group of cities a colony. This colony would turn into a Civ not being played in the game and then essentially be a vassal. IIRC you got resource and gold benefits and an alliance.
I also think that a civilization with multiple cities with a ton of unhappiness in each would eventually have a revolt and a new civ (again one no being played in the game) would take over these, say 3, cities as a new civ on the map.