This game owns me for good reason, the possibilities are nearly endless. Want to crusade for Jerusalem? Sure go ahead, it's in the name of the game, but you can do so much more. Perhaps you would like to go from the ruler of a small county in Ireland to becoming the ruler of all of Europe? Perhaps bring back and spread the norse faith? Or maybe save the Byzantine Empire and restore the Roman Empire to its former glory? Your ambitions are really the only thing that limits what you can do.