Civilization IV

Sid Meier's Civilization IV (Civilization 4 or Civ4) is a strategy computer game released in 2005 and developed by lead designer Soren Johnson under the direction of Sid Meier and Meier's studio Firaxis Games. It is the fourth installment of the Civilization series. Civilization IV was released between October 25 and November 4, 2005 in North America, Europe, and Australia. The game's first expansion, Warlords, was released on July 24, 2006 in North America and July 28, 2006 in the European Union. A second expansion, Beyond the Sword, was released worldwide between July 18 and July 30, 2007. A remake of Sid Meier's Colonization, based on a total conversion of the Civilization IV engine, Colonization, was released on September 23, 2008. As of March 26, 2008, Civilization IV has sold 3 million copies according to Take-Two Interactive. The game was re-released along with both of its expansions in 2007 in an edition entitled Sid Meier's Civilization IV: Complete; the North American version of this compilation was released on May 12, 2009 in a DRM free package that contains the core game, the two expansions, and the 2008 Colonization remake.