Has anyone done any testing or examined the code concerning barbarian and animal spawns? I've always assumed that hunting animals or barbarians is relatively pointless in the early game, because if I kill one then another one will spawn to fill the space. In games where I slaughter hundreds, there seem to be just as many more waiting and, of course, the only solution is to remove their ability to spawn. This suggests the animal and barbarian spawning rates aren't proportionate to the unexplored terrain on the map, but time some other factor like time. Sometimes barbarians build cities on spots you'd like. Sometimes they don't. I'd love to have a better understanding of the probability of barbarian cities occuring.