http://time.com/2992715/survival-gam...-in-september/

The final version will incorporate two play modes: sandbox and story. Sandbox mode starts the clock ticking and drops you into a non-narrative resource management game (you have to manage body temperature, caloric intake, thirst, fatigue, windchill and so forth), while Story mode has you playing episodically as bush pilot Will Mackenzie after crashing into the wilderness (the crash is caused by the geomagnetic disaster), trying to figure out what happened and why. Sandbox mode is what you get if you sign up for Early Access, whereas Story mode won’t be available until launch to keep it from spoiling early.
https://www.youtube.com/watch?v=JcdT1fQQuwY