It took longer than it really should have but by 2050, humanity has finally colonized Mars. The leader of the effort is an entrepreneur named Jeff Murray. Rather than live on the surface of the Mars, People have made their homes deep underground. The city and all its supporting facilities are buried deep down, safe from the inhospitable climate of the surface. Dr. West migrated to Mars recently at the personal invitation of Jeff Murray. Dr. West has been working on important research which he had hoped might lead to a cure for the Alzheimer's Disease. In Subterrain you fill the shoes of Dr. West, the apparent lone survivor of the underground city of Mars. Do what you must to fight, survive, escape, or otherwise amongst limited resources and relentless enemies. Your worst enemy will be your own carelessness...