Very interesting concept! I liked that you could mine to change all of the blocks on the game area. I really got a retro vibe from this and overall the gameplay was very fun and quite relaxing :D
I don't know if you've heard of Game Development World Championship before (gdwc2019) but it's a competition for indie game developers where they can submit their games and it's free! It's great if you want some more visibility for the game and it only takes a couple of minutes to join :)