I gave it a try the other day and really enjoyed it! Really nice cartoon art style / setting. The above-ground portion of the game feels like a solid clone of the Anno series games. Then below ground adds a fun twist of exploration / resource gathering into the mix.
Really looking forward to when it releases now!
I would have been pretty close to perfectly satisfied just adding an “endless mode” DLC that randomized areas and did something to make power up progression feel bigger. I used to play the hell out of the browser mining game motherlode and this is the first example of mining feeling kind of similar that I can think of.