Once again, you will choose from an unknown number of civilizations to play, but now you will also have a choice of leader. Each civilization has two leaders to choose from, and each has unique traits and bonuses to offer you. Theology will also play a larger role this time around, as there are seven religions in the game that are unlocked through research. Religion will let you manage your people's happiness, as well as generate gold and create great prophet units. There will also be specialists in the game that help you earn great people points that can be used to get free technology, start golden ages, or improve a city's output. Great people units include the artist, tycoon, prophet, engineer, and scientist.