A looooooong time ago there was a mystery involving Tales of Destiny on the PS1, in particular a bizzare trigger no one understood in the final dungeon and a chunk of dialog about 'saving the boy' or something similar, this in a game where a generally popular male character
(SPOILER)kicks the bucket. There were a fair number of people poking around trying to figure out what this was about and the mystery kind of deepened when people figured out the main character's sister WAS a fully playable character, just for some reason completely inaccessible. I don't really know what came from all of this, since it was well over a decade ago I last looked into it, but it was a cool mystery at the time all the same.