Crazy I was just about to post something about this. The guy who started it is from Russia and was arrested and awaiting trial since hundreds of kids in the world have killed themselves as a result. He basically called all the participants a waste of human life and that he is doing society a favor by cleansing them out. Its all teenagers that play the game, and all of them have really low self-esteem. They have to do 50 weird things over 50 days, with the last one being to kill themselves. Some of the things include cutting yourself, waking up every night at 4:20 a.m. to watch horror movies, eating rotten food, etc. to build yourself up to the final deed. The last thing they do before killing themselves is draw a blue whale and leave a short suicide note on social media.
Don't do it. Its quite fucked up.