Official website: http://www.firaxis.com/

 
8.5
Sid Meier’s Civilization IV: Beyond the Sword

 
3.0
Sid Meier’s Civilization V: Gold Edition

 
9.0
Sid Meier’s Civilization V

 
3.5
Sid Meier’s Alien Crossfire

 
4.0
Sid Meier’s Civilization IV: Complete Edition

 
5.0
Sid Meier’s Ace Patrol: Pacific Skies

 
9.3
Sid Meier’s Civilization

 
8.8
Sid Meier’s Civilization V: Brave New World