The second big change is that when you transition from one age to the next—there are three ages, Antiquity, Exploration, and Modern—you’ll pick a new civilization to lead, one that was at the height of its power during the age in question. So you might go from controlling Rome in Antiquity to Mongolia during the Exploration age.
Well, I still play civ4 bts, never went beyond civ5 and unless I update my hardware probably won’t try civ6 and civ7 anytime soon.
But what you mean, you’ll change civilization midgame? I can’t wrap my head around this concept. Or does your civilization simply change it’s name?