It looks like a cosy game.
A few things I've encountered that may be bugs, or me not understanding the game:
It said in the tutorial that I can press Space to go underground, but Space doesn't do anything.
Sometimes when I dig up things, I get a notification that I have received an item, but the inventory at the bottom is still empty and I cannot do anything with those items.
I cannot find a way to get energy back. I tried digging up food, but that doesn't do it either. So the game is only as long as your stamina bar.