Expanded Epic Game: The core game experience has been greatly expanded with the addition of new technologies, 27 new units, 13 new buildings, and 9 new Wonders.
Religion: A righteous people will seek out Faith to found a Pantheon of the Gods. As your Faith becomes stronger, you can cultivate Great Prophets who build on these simple beliefs to create a religion that you can customize and enhance as desired
Enhanced Diplomacy and Espionage: Establish embassies at foreign courts for closer ties (or clandestine operations).
Naval Combat: Your navy is now split into two different ship types, melee and ranged. This means that no coastal city should be considered safe, and can now fall to a surprise naval attack.
World Domination: The fight for world domination is now more dynamic than ever before. The Gods and Kings expansion features a reworked combat system and AI that puts more emphasis on a balanced army composition.