Hearts of Iron 4 and Crusader Kings 3.
And regarding the latter, it's fun to create the ultimate BWC lord and then just proceed to fuck as many random african bitches as you can while conquering and subjugating the weak men around you.
Nothing brings me more joy than seducing and breeding the young wife of your 50 year old neighbor, and then ripping away his last shreds of manhood by taking his land, leaving him homeless with a white cock lusting wife and a half-white kid that isn't even his.
And after you've gained enough land and become stable, you can really kick the multi generational breeding program into high gear, in order to change Africa into the dream land it should be.