For some reason the Civilization V multiplayer AI is essentially a dumbed down version of the single player AI. Since I am always playing cooperatively with friends this tends to be an issue! Use this list to create a more challenging Civilization V cooperative multiplayer experience.
Brave New World is the latest Expansion for Civilization V. It adds 10 civilizations and leaders, 8 wonders, 5 national wonders and several units and buildings. Most importantly it introduces new gameplay mechanics! GamplayInside explains all the changes and improvements in the latest Civilization V expansion.