A cross between Terraria and Factorio, as mentioned above. Even facing such competition, this game achieves uniqueness in merging action (bosses) and automation (less grinding). While it does have a few bugs and other issues that need ironing out, it is quite playable and very fun at that, even in this alpha version.
I appreciate the non-intrusive tutorial, but the learning curve is still a little steep in the beginning. For instance, it took me a few in-game days to figure out how to make the furnace work, perhaps a little modification of its sprite would help. On the other hand, it's also extremely satisfying when you get the hang of it. I think I've seen most currently available content, I'm missing one boss and one mining structure. I look forward to the next update.