Jack is a specially designed robot, sent by humans, to dig out the most precious metal on an alien planet but he requires refueling and repairing.
You start with simple ore and dig deeper to find the precious ore hidden beneath the surface of the planet. Spend all your ores in the market to buy upgrades or to buy resources for your Jack, making it easy for Jack to mine.
You can choose to buy resources from teleport to nuclear blast to make your way to the final precious metal. How well you manage your spendings on upgrades or buy resources to mine the precious ore, depends on you.