Been a while since I played Crusader Kings II. I must have missed the patch notes about this.

This new trailer for the upcoming Crusader Kings II: The Old Gods gives a taste of how you'll build a pagan empire, beginning in 867 AD. The base game was one of Kotaku's 2012 Game of the Year nominations; the expansion will be out at the end of May.

There is an Elder Scrolls universe mod for Crusader Kings II. Oh my. It's in its early stages, but you can get it here.