The Blue Whale Challenge

In April 2016, questions began to arise about a rash of teen age suicides in Russia, all coming from a social media group known only as "F57".  Rumors began circulating that these deaths, totaling over 130,  were attributed to a mysterious game called the "Blue Whale Challenge".  The rules were simple.  Follow a series of daily tasks ranging from the mundane to bizarre, to include self-mutilation and constant absorption of disturbing media, for 49 consecutive days.  On the 50th- commit suicide.  Though initially believed to be a hoax, it was soon discovered that there was something indeed evil preying on the children of Russia.