> And it's used to power effect where you might not expect it (Stardew Valley mines).

Apparently Stardew Valley's mines are not procedurally generated, but rather hand-crafted. Per their recent 10 year anniversary video, the developer did try to implement procedural generation for the mines, but ended up scrapping it:

https://www.stardewvalley.net/stardew-valley-10-year-anniver...