The game is still in development, but already has thousands of users.
According to the game’s website, users play a Japanese school girl so obsessed with a boy, that she is willing to kill other rivals for his affection. One tactic: to bully them into killing themselves.
“It was so scary when I looked at the thing and they had a post of a small child looking like they had hung themselves,” Kimble said.
Images have been shared on social media showing similar scenes.
In a statement, the developer of the game said it is "not intended to be played by children" and aims to portray bullying in a negative light.
"In Yandere Simulator, bullying is portrayed as an act of cruelty, and suicide is portrayed as a tragedy. I cannot imagine how anyone could possibly interpret the game as advocating for either bullying or suicide," Yandere Developer said in a statement. "The game makes it clear that instigating someone's suicide is a villainous act."