The Crusader Kings 3 ruler designer is out now – here's how it works
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CK3 character creation: Barbershop and ruler designer guide
CK3 Dev Diary 43 - A Ruler of Your Own | Paradox Interactive Forums
I created a 16yo custom ruler with martial education and he got the "coming of age" event at game start. Giving him also a random learning education trait. First time I saw