Interesting, I love the idea but you need to buff it A LOT to make a 1 city game viable (unless you assume players will just conquer like crazy, in which case you need to buff the military). I already tried OCC on Deity so I can provide some feedback on how to make it doable (right now it's completely impossible):



- The main thing is that you need much more great people generation. With 1 district of each type you simply can't get a single great person on deity. Specialists should generate great people points. Or each great person point should be multiplied by 3 (2 might be enough to get 1-2 great people, but not enough to win). Or both.



- More housing makes sense if trying to go tall, but without food it's still very hard to grow a city beyond pop 13. Since many tiles will be occupied by districts, and you are not guaranteed to spawn near many food resources, the "Sestiere" should give food. The +4 food from trade routes is a good start, but with one city you only have 2 trade routes so it really isn't that much. Or maybe each sestiere can give an additional trade route? That could make that strong trade route bonus a real game-changer (right now it's only +8 of everything, which by mid-game is not much, and by late-game is almost nothing).



- If you want wonders (eg: Cristo Redentor + Eiffel Tower for cultural victories, Oxford for scientific ones) you need tiles, and you only have one city (that needs food, production and districts). So you need a faster cultural growth to get tiles beyond the 3-tile workable standard, which you can use to build wonders. Also, no wonder terrain restrictions for Venice.



- You can't defend from Deity AIs with just one city, so you need some form of diplomatic boost. You won't get warmongering penalties if you go for OCC, so it doesn't need to be huge, but you need a relevant number because you are bound to not comply with several agendas.





And that's it for now, for OCC. Now, if you don't want to make OCC viable but you want this CIV to be usable, it means people will want to conquer around 7 cities to have a realistic chance at winning the game on high difficulties. In that case:



- Make sure that unique unit is cheap and durable, so players can actually use it (catapults are not worth the price right now). Make sure it's not too easy to kill by galleys, because coastal AI spam galleys like crazy on Deity.



And I think that's it. If you conquer 3 cities in the early game you can just continue playing like you would with any other civ at that point, just more aggressive. That being said, I don't think this is really the goal of having Venice in the game. I think the most fun version of this is making a civ that makes OCC viable on CIV 6. I would really enjoy that.

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