2K Games has just released a new patch, Pitboss and the SDK for Sid Meier's Civilization IV, the latest installment to the Sid Meier's Civilization franchise for the PC. The patch has a number of new and exciting features including new scenarios and map scripts, unit adjustments and enhancements, and more! Also released today is the Pitboss Server (Persistent Turn Based Server), which is a dedicated multiplayer server for online and local games that enables players the ability to log in and continue their progress in a game at any time. Lastly, 2K Games has released the highly anticipated Sid Meier's Civilization IV SDK, which contains the core game DLL source code, allowing gamers to completely rewrite or modify their own Civilization world to their heart's content.

To download the files or use the auto-updater within the game.