Original game ! I got lost a little bit at the start, wondering what I should do, and thinking I could dig the ground. But after unlocking the level, and trying to get back up, I finally understood that I needed to go deeper to find another shop.
I got carried away at level 5 and sold too much and ended up in debt. Too bad I wanted to reach the max radius to mine everything in one go.
The mining is fun because the breaking of the blocks has a good feedback, it just misses some stuff like indications that you may have a stack of diamonds in these rocks, or enemies.