A new video developer diary for Humankind explains more about its single victory condition, the pursuit of Fame points.
“In Humankind we created a single unified victory condition called Fame, and Fame is going to reward you for every great deed that you accomplish, every discovery that you make, every wonder that you build… all these ways that you can leave your mark on history.
Come watch the video to learn more about Fame and about switching cultures across eras.
Different civs have different unique units, buildings, and enduring perks so there are benefits to switching, though not switching will get you bonus Fame instead.