Billionaires aren't the only ones prepping for doomsday, but they could be the most prepared if the world gets hit by an asteroid or nuclear missile.

In recent years, companies have built "billionaire bunkers" that cater to the apocalyptic fears of the superrich.

The bunkers are not only safe from bombs and cataclysmic weather events, but also come outfitted with luxury amenities like game rooms and indoor pools.

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A lot has changed since December 21, 2012, when around 10% of people falsely believed the world would end.

The effects of climate change have become more frequent and severe, threatening vulnerable areas with floods, hurricanes, and extreme heat. Machines have become more intelligent, leading some to worry about a technological overthrow of society. And the possibility of global nuclear warfare looms even larger, with North Korea continuing to advance its nuclear weapons program.

Read more: The nuclear 'Doomsday Clock' is closer to midnight than it's been in 58 years

Predicting one of these unlikely doomsday scenarios may be impossible, but planning for them isn't if you're a member of the 1%. Take a look at the "billionaire bunkers" that could house the superrich during an apocalypse.