Sweden-based Paradox Entertainment today announced that its PC strategy game Crusader Kings has gone gold in North America. Based on the studio's Europa Universalis engine, Crusader Kings puts players in the role of a number of powerful European kings during the time of the Crusades. Paradox is self-publishing the strategy game in North America, a first for the company. The game will be ready for release on September 21. For more on Crusader Kings, see GameSpot's review of the European version.