https://www.pcgamer.com/meanwhile-in-dwarf-fortress-players-build-computers-powered-by-vampires/

Vampire computers: They're a thing.

Let me try to explain. As long as there have been deep simulation games, people have been creating pretty wild things in them. How they do it is usually more interesting than the object itself. A word processor is boring. A word processor made inside Minecraft using thousands of redstone blocks? Pretty rad.