Crusader Kings II is a grand strategy game with RPG elements developed by Paradox Development Studio. This Crusader Kings II Wiki is a repository of Crusader Kings II related knowledge, useful for both new and experienced players and for modders.

Anyone can contribute to the wiki. If you want to become a contributor please register (though you can also edit anonymously), and check out the work needed page. If you spot anything in need of improvement, don't hesitate to make an edit. If you plan on making any major changes it is recommended you read the style guidelines first.