Dig your way to collect all blue minerals in each area, also get precious golds and diamonds, and then spend your cash to purchase special suits and bombs! You can't dig up, but you can press C key to go to the surface. You'll need to wear an armored suit to protect yourself from bigger explosions as you advance. Let's dig it, everyone!
Use the Arrow keys to move, X to set a bomb, C to teleport, R to restart a level.