. . . . . . . "2005-10-25Z"^^ . "2006-06-30Z"^^ . . . "Sid Meier's Civilization IV"@en . "Sid Meier's Civilization IV (also known as Civilization 4 or Civ4) is a turn-based strategy computer game and the fourth installment of the Civilization series."@en . . . . . .