Sid Meier's Civilization IV (also referred to as Civilization IV, Civilization 4, Civ IV or Civ 4) is a turn-based strategy game encompassing all of human history. Players attempt to take a fledging civilization from 4000BC to modern times and lead their civilization to victory through domination, science, culture or diplomacy.

Developed by Firaxis Games and published by 2K Games, Civ 4 was released on between October 25 and November 4, 2005 in North America, Europe, and Australia, for Microsoft Windows.

It has two expansions: Warlords and Beyond the Sword.

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