Civilization 5 has received a patch of mammoth size. Now when we talk about it being “Mammoth” we seriously mean it. It not only fixes broken bits of the game but also adds a lot of new features to it. For example, now you can now liberate cities or now the game allows you to return a city to an ally, who had it taken from them by another player, a whole new feature.
The patch is currently available on Steam. It not only offers fixes, balance tweaks and general split and polish but also drastic game-changing mechanisms.
You can view the while list of changes here.