Something that totally shocked you learning it or realizing it. I might be using the wrong wording here, but ill give you my example:
In Ocarina of Time, we all know the Triforce was cut, or otherwise not something you get in the game, save for in the cutscenes towards the end. BUT - did you know you can actually go find it and see it in the game?
If you have a Gameshark, turn on the levitation code. Go go Zeldas Cortyard in the room where she is, and fly over the wall. When you fall, you’ll land in a pool of invisible water, and underneath the center of the room with the flowers, look down - there it is. Can’t interact with it, but you can see it, and i choose to believe putting it in that exact spot was intentional for lore reasons.
What do you got?
PoE lore is absolutely great!
There’s also further funny bits. PoE1 mentions Doryani many times but never mentions what happened to him. It’s because he gets recruited by Alva to help MC in PoE2 (and gets demoted from chief thaumaturge of Vaal to free item identify bot). Fun fact is that Alva probably try to bluff him about the time travel and history, but she accidently hits the same theory as Ketzuli, Architect of Time and advisor to Doryani so Doryani believes that quite easily, especially that the Vaal cataclysm happens minutes later so it’s fait accompli anyways. And even better is that this theory is observably false since the atlas in PoE2 suppose to be Wraeclast after the cataclysm, but it has no sense at all with random placement and mix of everything. Doryani even notice that (though its too late) and comment that the reality itself is disrupted by the sheer power of the cataclysm, and warns MC that anything can happen, even meeting with another Doryani (which ofc happens, no way GGG is gonna waste a good boss on just campaign). Thing is, this makes the theories about determinism of history nonsense. And ultimately we know that of the Vaal traditions the only thing that gets preserved is their knowledge about thaumaturgy which only leads to even more tragedies as the recieving Azmeri later found the Eternal Empire which while less bloody than Vaal still abuse the thaumaturgy and fucks up the world again.