There are many ways civilisation could end, even with wise, benevolent leaders like Kim Jong-un, Donald Trump and Vladimir Putin watching over us. Now, in this fun interactive story of global doom, YOU decide how humanity perishes. Will we be turned to grey goo by Elon Musk's nanobots? Driven collectively insane by Russia's most potent memes? Or smashed to atoms by someone sitting on the wrong button in North Korea?