I’ve always been intrigued by Skyfarer - made by FailBetter Games (Fallen London, Sunless Seas, Sunless Skies, Mask of the Rose). It’s a Sunless Skies TTRPG. I haven’t tried it but it definitely seems to fit in the steampunk genre.

While it may not exactly match up with the body of your message, I think this would fit the subject line rather well:

Dwarf Fortress