They work in a similar sort of way to Great People, only they're earned via the Civics tree when you unlock a specific Civic, like you would occasionally earn the odd extra Envoy in a similar fashion. There are a handful of unique ones that you can unlock in a game. To give a brief explanation, Governors are a new mechanic introduced with the Rise and Fall expansion that act as a kind of modifier for specific cities of your choice.

Civilization 6 new Civs - all new Civs in Rise and Fall and other Civ 6 DLC.

Civilization 6 Rise and Fall Loyalty and Governors explained - how to increase Loyalty and earn Governors in Civ 6.

Civilization 6 Rise and Fall Era Score - how to earn Era Points and Historic Moments, plus Golden Ages, Heroic Ages, Dark Ages and Dedications explained.

Given the typically intricate state of the new mechanics, we've put together a couple of dedicated guides to getting the most out of Civ 6 Rise and Fall's new features, which you can check out here: New mechanics: Governors, Loyalty, Great Ages and Historic Moments Trade and culture from water, river and naval bonuses Trade Routes, diplomacy and early-game expansion Combat and Appeal-based culture and Tourism

Civ 6 civs list