Assuming that people on Mars behave exactly like the robots that they always send there, then that can only mean one thing: dig, dig, dig!
That is exactly the vision of Mars Miner 2. As an intergalactic miner, you are underground in the search for precious stones, metals, and rare artifacts. Almost just like in the old Ruhr Valley - but with better music. And in space. However: Good Luck!
The full version of Mars Miner 2, including 10.000 Credits, worth $1.99 is today offered FREE!