"Blue Whale" (Russian: Си́ний кит, romanized: Siniy kit), also known as the "Blue Whale Challenge", is a social network phenomenon dating from 2016 that is claimed to exist in several countries. It is a "game" reportedly consisting of a series of tasks assigned to players by administrators over a 50-day period, initially innocuous before introducing elements of self-harm and the final challenge requiring the player to kill