I’ve broken down these survival systems into three primary categories:
Technological survival systems in the game include Oxygen and Battery. If you run out of oxygen while exploring that’s it… you die. If you run out of battery power while exploring your headlamps will no longer function and your digital maps and diagnostics will no longer be visible (perhaps you can use the sun’s position to find your way back).
Biological survival systems include Starvation, Dehydration, and Exhaustion. You would have to try pretty hard to die of starvation in the game (basically just sit around for 3+ weeks) but that’s not saying that it can’t be done. There may be ways to synthesize oxygen and water from the Martian environment, but food is a little harder to come by. Dehydration though is more of a daily survival concern. About three days without water and you’re done. Last but not least, exhaustion can contribute to some ill effects in our third survival category, psychological survival.
Continued strenuous activity (running and jumping), on top of inadequate nutrition and lack of sleep, will drastically affect your state of mind. You may start hallucinating or become disoriented. The symptoms you exhibit might be different every time you play.
Hopefully this gives you a little better idea of the survival mechanics we are working on and how they will impact your exploration habits. At some point we will discuss how these survival mechanics are communicated to you the player through GUI indicators in your helmet and contextual and environmental clues.