Things that are true in our Doskvol thanks to my players, for example:
•Ghosts can manifest incorporeal objects, like books they’ve owned or even written after death, into physical tangible objects. They also stay sane for longer, but the Spirit Wardens don’t care about that. You’re a ghost, you belong in a bottle.
•There are small sea demons, like leviathans but much much smaller, inside the lightning barriers. All over the canals. Their blood is even more potent than the giant leviathans, but they’re too hard to catch in an industrial manner, and the blood is too useful for research to be used as fuel.
All this in a few sessions, and we’re still basically on “Season 0,7”, we’ve not even made the crew yet because not all players have been present at the same time.
Oh, the Spider made a potion out of the pure leviathan blood. Knocked him right out for a week, and now he’s not alone in his head. Good times.