The complete Civilization IV experience contains the classic Sid Meier's Civilization IV as well as the 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 $39.99, will be available at retail outlets across North America starting May 12, 2009, and is entirely DRM-free.