It's Finally Over, Mastermind Behind The Blue Whale Challenge Arrested

The Blue Whale game or Blue Whale Challenge is believed to be a suicide game wherein a group of administrators or a certain curator gives a participant a task to complete daily — for a period of 50 days — the final of which is the participant committing suicide. Participants are expected to share photos of the challenges/tasks completed by them.

This suicidal game is reportedly prevalent in 18 countries.

These daily tasks start off easy — such as listening to certain genres of music, waking up at odd hours, watching a horror movie, among others, and then slowly escalate to carving out shapes on one’s skin, self-mutilation and eventually suicide. 

Blue Whale began in Russia in 2013 with "F57", one of the names of the so-called "death group" of the VKontakte social network. Philipp Budeikin, a former psychology student who was expelled from his university, claimed that he invented the game, stating his purpose was to 'cleanse' society by pushing to suicide those he deemed as having no value. In Russia in 2016, Blue Whale came into broader use among teenagers after a journalist brought attention to it through an article that linked many unrelated suicide victims to the Blue Whale, creating a wave of moral panic in Russia.  According to recent stats, this violent game is prevalent in the following 18 countries: Argentina, Brazil, Bulgaria, Chile, China, India, Italy, Kenya, Pakistan, Paraguay, Portugal, Russia, Saudi Arabia, Serbia, Spain, Turkey, United States and Uruguay.

Finally, Budeikin was arrested and pled guilty to "inciting at least 16 teenage girls to commit suicide", leading to Russian suicide prevention legislation and renewed worldwide concern over the Blue Whale phenomenon.

Sources :
1) https://en.wikipedia.org/wiki/Blue_Whale_(game)
2) http://indianexpress.com/article/what-is/what-is-the-blue-whale-challenge/
3)
http://www.apnlive.com/world-news/russian-police-arrest-17-year-old-blue-whale-challenge-mastermind-25585