MOSCOW - "Attention! Attention!" blares the Russian voice from a loudspeaker. "The nuclear bombs will be launched in one hour."
That sound heared from room styled as a Soviet-era nuclear bunker, a couple of Russians race to prevent a catastrophic strike on the United States (US).
Their quest, the latest craze in Moscow is to find the nuclear launch codes and deactivate a hidden red button, which has already been pressed by a mad Russian general.
But calm down. It's complete fantasy; just an interactive game hosted in a building in a former industrial area of the city, harking back to the fears of the Cold War. But amid the current tensions with Russia, in which potential nuclear confrontation with the West has again been raised, it feels a little unsettling.
"I'm worried because there is very stupid information from both sides," said Maxim Motin, a Russian who has just completed the Red Button Quest game.
"I know that normal people all over the world don't want any war," he added.
Are this part of nation preparing for conflict? Russian officials have been preparing the nation for the possibility of conflict, stoking deep-seated concerns about a standoff with the West, Russia's old Cold War rival.
Russian television has been broadcasting a mass training exercise, involving up to 40 million people across the country. It is designed to prepare responses, the government says, for a chemical or nuclear attack.
The video shows emergency workers with protective suits and gas masks leading the civil defense rehearsal, the biggest of its kind since the collapse of the Soviet Union. It suggests the Kremlin wants Russians to take the threat of war very seriously.
Of course, all-out conflict between Russia and the West remains highly unlikely. Analysts say the principle of Mutually Assured Destruction or MAD still holds as a deterrent, just as it did during the Cold War. We hope this just a game...