Everest VR is now available, offering a virtual reality simulation of summiting the world's tallest mountain without the need to enter the death zone. This is available for Windows on Steam and requires an HTC Vive headset. Here's word, which indicates this is more of a VR experience than a game:

Step into a first-person, photo-realistic experience like no other, as you join an expedition to reach the summit of Mount Everest. Developed by VR studio Sólfar in partnership with RVX – the Nordics’ leading visual effects and animation house – EVEREST VR is designed from the ground up for virtual reality.

Key Features:

• Experience Everest in 5 iconic scenes. Prepare for your expedition at Basecamp, traverse the terrifying Khumbu Icefalls, overnight at Camp 4, ascend the perilous Hillary Step, and finally conquer the summit of Everest.
• After completing your first summit attempt, unlock God Mode to reach a unique vantage point of the Himalayas only possible in VR. Towering over the mountain range, this is a stunning VR diorama.
• EVEREST VR is a powerful first introduction to VR, designed not as a conventional game but as an accessible experience that focuses on the strengths of VR to transport you to an impossible real world location.
• Powered by Unreal Engine, EVEREST VR pushes the envelope of real-time graphics to deliver AAA visual fidelity that is unparalleled in virtual reality applications.
• Optimized for the HTC Vive, EVEREST VR scales from a uniquely satisfying and comfortable standing experience to one that takes full advantage of large room-scale Play Areas.