VR experience offers journey into US president's nuclear bunker – video

Nuclear Biscuit, a simulated experience, allows US officials to wargame a missile attack and see the devastating consequences of their choices.

Players experience what the president would have to do in the event of a nuclear crisis: make a decision that would end many millions of lives - and quite possibly civilisation on the planet - with incomplete information and in less than 15 minutes. Here's a snippet of the game as completed by Julian Borger, our world affairs editor

• 15 minutes to save the world': a terrifying VR journey into the nuclear bunker