Went through it in one sitting.
Pros-
Graphics were great even on low on my POS machine.
Sound/Music were good and fit the mood.
Gameplay has a few issues (see cons) but overall addicting
Cons-
Upgrade system needs work, like what is possible to built upward so dont have to click down through the entire thing all the way to iron
Chased iron throughout, don't know if its a con but maybe the cost for some things may be lowered?
Always always chasing cooling tech to get deeper, dont know if con but turned into an artifact hunt before pursuing other techs.
Lacked replayability
Comments/suggestions
Look forward to part two if you have it planed exploring earth, maybe continent by continent.
The obvious re playability is building a world/cities/space-stations perhaps? Also, a tool tip to find the artifacts. example between 160-170 is where you find the last set.
Overall
Great game really, always did like mining even before the big MC. This killed 10 hours easily.