Underground Scout

In this game you pilot a scout ship through a labyrinth of underground tunnels in search of oxygone, a mineral ore which is vital for the manufacture of oxygen. The ore is contained in free floating boulders which you will have to blast. You're then to load any oxygone ore which is in the debri aboard your ship for the subsequent production of oxygen. Be careful not to crush into the boulders or to run out of oxygen.