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Check out the demo for Chipmatic an upcoming mining and automation game
(www.gamingonlinux.com)
this looks neat, clearly very motherload inspired which is very nostalgic. The automation aspects seem a bit basic since there doesn't seem to be any logistic design gameplay like a typical automation game would focus on, which may just turn the "automation" into more like "arbitrary timer to unlock upgrades" but I can't say for sure without having played it. I'll download it and give it a try!
Edit: Played it a bit, it's fun but as I expected, the automation is very simplistic and is effectively just a time gate on resources, but that just encourages getting the upgrades to make automation faster. Unfortunately, unlike motherload, the player character has no momentum or gravity at all, so movement is pretty bland. There's also no damage so there's no risk, and you can just teleport to the surface (with a cooldown), so the planning, time management, and panic aspects of motherload are absent here. But that's not necessarily a bad thing, they're clearly going for a more comfy vibe.
Definitely has a lot of potential!