Firaxis Games has issued a new patch for Civilization IV, bringing their strategy game to v1.61 (press 'read more' for changelog). The Pitboss Server (Persistent Turn Based Server) 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. Also, the SDK contains the core game DLL source code, allowing gamers to completely rewrite or modify their own Civilization world. A playable demo is locally mirrored here.

Civilization 4 v1.61 Patch (45.74MB)

Civilization IV SDK (5.91MB)

Civilization 4 Pitboss Server (3.46MB)