Guys, I discovered that Great People costs scale up ccording to some unknown factor. There's a 'base price' for each Era to which a Great Person belongs, but it looks like as soon as the first Era's Persons are earned, the next Era's Persons price goes up from the base. As of yet I haven't been able to determine according to what. So, if someone figures it out, please edit the article! Oh, and this doesn't seem to hold for art-related People. Soltan Gris 16:55, October 5, 2018 (UTC)
great people *can* be killed[]
I killed an enemy great admiral. How to do it:
move military unit on great admiral. great admiral is teleported to nearest harbor of his civ. before the great admiral moves, move other military unit on his location in the harbor. The enemy great admiral is killed.
We might want to add this to the page