Personally I’m really obsessed with the lore in Fire Emblem: Three Houses
Dark Souls
I’ve never played any of the games, but the wikis have so much reading material I can stay engaged for hours.
It’s a universe populated by unfathomably evil undead beings. They farm humans for their flesh and their souls, and there is no chance humanity will ever free themselves.
It’s an incredibly dark setting, but it’s hauntingly beautiful. What kind of society would these creatures develop? Architecture, art, religion. Their civilization is an anathema to us but that’s why it’s so alien and captivating