This dev diary elaborates a bit on the new technology system introduced to the game
Developed by Paradox Development Studio, Crusader Kings II: The Old Gods, a new expansion to the world of Crusader Kings II, will add a number of widely requested features to the game, including the ability to play as a Pagan or Zoroastrian ruler, expanding empires through war, pillaging, and ruthless brutality. Players will also be able to begin their in-game reign as far back as the year 867 AD, making The Old Gods officially the Paradox title that spans the longest period in history.
Crusader Kings II: The Old Gods will be released by Paradox Interactive on May 28th - the last video developer diary has been added in our download area.
Update: selected retailers are offering 75% off the entire Crusader Kings II franchise to those who pre-order the game while other retailers will offer the same discount at launch.