Crusader Kings III

I struggled to get this playing casually, so I started a new game as Norse took Scandinavia and became the Norse Culture head and stopped them from converting to Swedish/Norwegian. Then I never Adopted Feudalism so I'd have more time to Raise Runestones since you lose the ability in High Medieval Era. I focused on making my Vassals Dynasty members by Revoking/Marriage and ended up getting it around ~1100