How many districts?

[Charlemagne]

I know the game is too new for there to be a consensus, but, should one strive to have every district possible in a city? In order to get all the buildings possible. If you don't have the proper district you can't have the building, like encampment>barracks. There are only so many tiles around a city and districts produce nothing so this is not a light decision. Or should one go for specialization, military district in one city, economic in the other? Do districts in one city affect other cities, for example one entertainment district in one city will it help every other city, or do i need an entertainment district in every different city?

[Astasia]

The idea is to fill out all the district slots. Like great engineers and germany have bonuses that increase the number of districts in a city, and that's a powerful bonus. Some people are finding it's better to limit the districts in a city even beyond the pop limit, I don't agree with that but it's a strategy you may find works for you.

Districts themselves only apply to the city you build them in, however, certain districts like the Industrial Zone and Entertainment Complex have buildings within them with effects that apply to all cities within a radius.

[dred]

My take on this is this is something to decide after you fully understand what they all do and can better work out a strategy.

I'm sure they have some benefits for some of the ones that I never used like, entertainment and faith districts. So I'll have to get around to building them and seeing what the really do.

[Metadragon]

Depends on your map size, civ and planned win goal. If your trying for science or culture or religion then many small settlements specced for each will be better for you in the long run. Domination victory is better to focus on production.

[dred]

Agree, my gameplay is usally a domination and military strategy. I then build industrial and commercial mostly, and then the military district

[Sentient_Toaster]

Some of them work better with specific terrain or next to certain other districts or wonders. Wonders now take a full hex and some of them are very very picky on where they can be built, too.

Opportuntiy cost means that you're unlikely to build everything everywhere before the game is over, and a city can't be building multiple districts and buildings at the same time, so you'll probably want to specialize. e.g. having one city that produces units with more starting experience seems better than having two cities with encampments that produce units that are not boosted unless you have an urgent need to spam.

Entertainment districts contribute an amenity so that'll help if you have quite a few cities (given that each luxury resource will provide amenities to only four cities, no matter how many copies of that resource you have -- the duplicates are only useful for trading).

Not sure that you'd ever want a holy site if you're uninterested in competing with religious space, e.g. if all the Great Prophets were already taken.

[Junibugg]

No, you shouldn't have one of every district in each city. I've noticed that the Production cost of districts goes up the more districts you have overall (not just in that specific city). I've hit upon the idea of having a set of districts that I build in every city (in my current game, that's Commercial Hub, Encampment, Baths, Industrial Zone and Neighbourhood) and only occasionally building, say, a Campus in cities with enough space and a high Production output.