City unrest....from having too many cities. What's the tipping point/how is it calculated?
So how exactly is the "too many cities" unrest penalty calculated? What exactly are the drivers?
Is it based on a fixed number of cities? The number of cities relative to the AI? Total population?, etc?
And after you've reached that tipping point, just how big are the penaties, and how big do the get? Is there a cap, or does the penalty grow indefintely?
Is the penalty linear or exponential?
Thanks!
edit:
I'm asking this because in a recent game I was doing fine financially, and then I started going on the offensive and attacking the AI. I picked up two cities, but every city after that I razed a few turns later. But the penalty seemed to keep on growing even though the cities were destroyed.