Fall from Heaven II is a dark fantasy mod for Civilization IV. The Age of Ice has ended, what is left of the once great empires of man have formed into small tribes, ready to rebuild and retake that which was lost. Fall from Heaven II requires Civilization IV Beyond the Sword patch 3.17 to play.
This trailer made of in game footage is not of the most recent version, but nevertheless provides an awesome introduction to the epic world of FfH.
Note that the newest versions are far more polished and feature a LOT of new features and art work (like revised terrain and unit graphics).
thanks to Jupai for creating and sharing this video... definitely worth seeing!