The Cheating Dungeon (Crafting)
A young engineer with photographic memory dies after choking on a pretzel. He is reincarnated in a fantasy world as a dungeon core. Having near infinite knowledge from Earth, and infinitesimal common sense, he begins to shape his dungeon into the ultimate factory of resources. Collect all the things! Automate all the systems! Even adventurers can be farmed! And if a few world governments collapse in the process, well, it’s all for the sake of science!
This story is like if Factorio was about dungeons, played by someone with ADHD.