This complete Civilization IV experience contains the award-winning classic Sid Meier's Civilization IV as well as the highly regarded Sid Meier's Civilization IV: Warlords, Sid Meier's Civilization IV: Beyond the Sword, and Sid Meier's Civilization IV: Colonization expansions. Best of all, the entire package is value-priced at US$39.99 and is entirely DRM-free. - 2K Games

You can get your strategy loving hands on Sid Meier's Civilization IV: The Complete Edition when it comes to North America on May 12, 2009 for Windows-based PCs.