This article has multiple issues. Please help improve it or discuss these issues on the talk page.
This article contains wording that promotes the subject in a subjective manner without imparting real information. Please remove or replace such wording and instead of making proclamations about a subject's importance, use facts and attribution to demonstrate that importance.(February 2012)
The game has historical scenarios to start from, featuring personages such as William the Conqueror, Robert Guiscard, Alexius Comnenus, El Cid, Friedrich Barbarossa, and Edward III. Unlike past Paradox titles, there are very few predetermined historical events and no predetermined historical personages that would always appear after game start. The game simulates the lives of tens of thousands of individuals of note (courtiers and nobles), intermarrying, having children, moving, inheriting, plotting, accumulating wealth and titles, etc. Each is at birth assigned a number of inherited scores ('DNA') that determine health and fertility as well as administrative and military capabilities and the characters will, through the course of their lives, usually add a few noninherited traits that alter the scores. The qualifications and relations of individuals will highly influence their fate and is therefore of great interest to their player. This all makes for highly unpredictable game dynamics as the state of affairs on the 'world stage' is the product of the interplay of myriad events on the micro level.
One of the features of Crusader Kings is the ability to export completed save files to Europa Universalis II, an in-game converter being provided for this purpose. The online community has also developed converters for Europa Universalis III, as well as its various expansion packs. This allows a game to continue beyond Crusader Kings ' set end date.
On July 31, 2007, Paradox announced an expansion to the game: Crusader Kings: Deus Vult. The game was released on 4 October 2007, and is only sold online.
The expansion pack redesigns some of the basic features of the game, such as removal of DNA inheritance of traits, religious warfare, use of friends and rivals, etc. In addition, new scripting commands were added as well as new character traits.