If you have three or more envoys in a city state you can become the city state’s Suzerain which gives you special privileges and bonuses. The more envoys you send to a city state, the more benefit you receive. The city states are specialized to boost Trade, Religion, Production, Science, Culture or the Military. Placing an envoy with a city state provides you with whatever benefits the city state offers. Future envoys can’t be built, they must be gained by accumulating Influence or by completing mini-quests offered by the city state. If your civilization is the first one to contact a city state, you automatically place an envoy there. If left to their own devices, city states will not attack you but you can trade with them and bring them into your orbit using envoys.Įnvoys are units that allow you to interact with City states. You can attack and kill them if you wish, but you’re wasting an opportunity if you do so. If you are playing China under the leadership of Qin Shi Huang, the research boost is increased to 60%.Ĭity states are autonomous cities you find as you uncover the map.

You don’t have to be researching the advance to get the time reduction, it will be waiting for you whenever you decide to research the advance.Įureka moments and Inspirations cut research time by 50%.

The time reductions are called Eureka moments on the Tech Tree and Inspirations on the Civics Tree. Sailing allows you to build Galleys and building two Galleys cuts the time it takes to research Shipbuilding. For example, if you want to build your civilization around naval power, founding a city on the coast reduces the time it takes to research Sailing. Research in Civ 6 is designed to reward focusing on paths through the Research Trees that correspond to your chosen playstyle. The advances that allow these unit combinations can be found in the Civics Tree. Starting in the Renaissance era units of the same kind can combine to form Corps, Armies, Armadas and Fleets. Link a Warrior to your Settler and they'll move together while most Barbarians leave them alone. This can be very useful in the early game when Settlers or Traders are threatened by Barbarians who are smarter than they were in previous versions of Civilization. Combat units can stack, link and defend non-combat units like Traders and Settlers, and support units like Siege Engines and Field Medics. Military Engineers unlock with the Military Engineering advance on the Tech Tree during the Medieval era.Ĭiv 6 reintroduces a limited version of unit stacking. If you want a road to a non-trading partner or any other location on the map, a Military Engineer can build it for you. This is a nice way to link your civilization’s cities without having to hassle with plotting a course and guiding a Worker along the route. Instead, Traders now automatically build a road from their home to their destination city. Unlike Workers, Builders don’t build roads.

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