Dig deep, haul your ore back up to sell, upgrade your pod, and keep clawing downward before the shaft floods and crushes you.
You pilot a mining pod down a shaft of dirt, ore and minerals. Dig in the direction you thrust to gather cargo, then return to the surface to open the shop, sell your ore, refuel, repair and buy upgrades. The shaft floods and collapses from the top down over time, so you must keep pushing deeper to stay ahead of the rising line. Mind your fuel, hull, gas pockets and lava.
Deep Dig Co. revisits Motherload, released by XGen Studios in 2004. You pilot a digging pod down through rock to harvest minerals, then fly back up to sell them and buy a better drill, bigger tanks, a stronger hull.
Fuel is the leash. Every metre you descend is a metre you still have to climb, and the pod does not coast. The whole tension is in the decision to turn around: one more seam pays for the next upgrade, and running dry at the bottom of your own shaft costs you the trip. It is a game about greed with a very simple arithmetic behind it.
Deepdig Co. is an original free browser game in the dig-collect-and-upgrade mining tradition, with a closing-in flood hazard and a daily shaft. Just open and play.