If you've already conquered the world a couple of times in Civilization V and feel that you need some new civilizations to go up against, Firaxis have heard your prayers and next week they'll be releasing two new civs for your pleasure. The Mongolian civ will be free to download, and will also include a Genghis Khan-themed Scenario Pack, will the Babylonians will cost you a few euro and allow you try your hand at leading Nebuchadnezzar II to victory. The latter used to be only available in the deluxe edition of the game.