"The mountain tests your body - Sanity tests your mind."

The final expansion in the Summit Series, Sanity brings another dimension of play and immersion as players attempt to harness their character's Focus while maintaining their Sanity - all while trying to survive the world's deadliest mountain.

Can players keep their cool, or will they break down under the immense pressure of the expedition... or the competition?

With the dangers of hypothermia threatening your survival, can you trust your mind or is it playing tricks on you?

It's just a matter of time before someone cracks like the ice under their climbing axe.