The Game of 72 is the latest in a series of risky pranks being done by kids and then shared to social media. But the prank, and others like it, may not be as common as many people think.

Game of 72 is a new online game that encourages teens to disappear for 72 hours.

It's called Game of 72 and it's a challenge to teenagers on the social network to completely vanish for 72 hours.