https://blue-whale.itch.io/blue-whale

After returning from school, 12 year old Midori receives a message on the social network from a stranger. 
He invites her to play the "Blue Whale", a mysterious and dangerous game, 
at the end of which Midori should become a whale...

A death trap? Urban legend? Or just a child's play? 

Immerse yourself in the heart of the teenage girl, go through with her the trials of a stranger,
find yourself in nightmares, untangle this strange story and save Midori.