Win every game of Crusader Kings 3 by breaking all the rules

Crusader Kings III is a strategy game about complex systems of overlapping rules in the middle ages, which can make it a pretty daunting experience at first. It turns out, though, that you can completely ignore all the feudal customs of the age and dominate every campaign. The so-called 'North Korea Strategy' from Crusader Kings II is back, and in Crusader Kings III, it's stronger than ever.
YouTuber Reman, who covers Paradox games extensively on his channel, has made a video detailing the use of the strategy in Crusader Kings III. When you're playing normally, you're constantly trying to right-size your domain in order to avoid penalties of up to 90% to taxes and levies for having too many personal holdings. The 'North Korea strategy' rejects this idea, based on the fact that by the time you're an emperor, you're getting even less gold and fewer levies from individual counties as each ruler in the feudal chain takes their cut.
So rather than parceling out your realm to vassals, this strategy dictates personally controlling every holding once you become an emperor. Naturally, getting to this point involves divesting quite a few vassals of their holdings, and Reman explains the easiest way to do that in his video.
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