Civilization – What’s the formula for border growth

civilization-6

The Civilization 6 interface apparently doesn't provide any information on why or how borders grow. I assume its culture with modifiers because that was how it was in Civ 5 and Civ 4, but I have no idea if the formula is the same as Civ 5 or what might affect it.

The only quote I could find in the manual says:

The more Culture you generate, the faster your borders will grow

Does anyone know the formula for border growth in Civ 6?

A side question: Are culture producing buildings and districts the best way to have natural border growth (i.e. not purchased)?

Best Answer

Based on multiple posts in this thread, it looks like the border expansion formula has been found in the XML files:

  1. tiles are obtained with culture produced by the city
  2. the culture cost of a tile is 10+(6*n)^1.3 (where n is the number of tiles obtained by culture already...not sure if gold bought ones count)
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