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In Civilization 5, each city you build increases the cost of new social policies by some percentage, based on the current map size.

This question mentions +30% for duel sized maps. I'm assuming this is correct?

What are the percentages for other map sizes?

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up vote 6 down vote accepted

This is taken straight from the XML files included with Civ V: (Updated for the June 2011 patch, where all of them were reduced by 50%)







So it's 15% for all but the largest two map sizes.

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