Sid Meier's Civilization IV

As with the rest of Sid Meier’s Civilization series, the player controls a real historical civilization and leads it from the stone age to the space era. The goal is to develop its culture, science, and economy and to conquer the neighboring countries if you feel like it. There are eighteen playable civilizations in the game with some of them having multiple leaders to choose from. Each PC-controlled leader is based on an actual historical figure and has his or her unique personality traits, such as being diplomatic or aggressive.