Nice gameplay, I agree with others that mining sound effects would really help the game out. Also, maybe like a "fog of war" to hide underground elements you haven't been directly next to yet? Would add to the exploration aspect of the game.

Very simple and straight to the point. I liked it.

Very cute concept! I think that more information should be presented to the player, i.e. some particles to confirm hitting the diamond/gold blocks.

The game is a bit short but the base gameplay is nice ! It would greatly benefits some sounds effects. Also it would be cool to see precisely which block we are hitting ! Cheers