That means that the “build your own story” is actually literal here, as every character you have will have various stats and traits, which can be changed by various random events. It’s actually an RPG as well, as you have your own character (which you can create and edit if you want), and you must keep your family’s legacy alive through heirs, as your character eventually dies. Crusader Kings is more than a simple strategy game. However… Crusader Kings definitely has more affinity with that. In other words, what you do and the choices you make are essentially your story, because believe me, once you’re done with a playthrough, you’ll have stories to tell. Both games follow the logic of “build your own story”.