Didn't watch the video but this case is real, it was national news here in Brazil.
2 friends (12yo and 16yo), the 16yo dude being a known creepy dude had given some gold in game to the 12y friend have some headstart, but he wanted the money back. He wasn't able to get the money and dude went to his house to fight him.
At this point he beat him and RAPED him. Yea, dude was crazy. After abusing him the victim said he would tell his parents and so he decided to kill him... Chocking him unconscious and then cutting his legs off with a saw while he was still alive. Creepy as fk
So yea, it was real and Tibia was the trigger but the killer was definitely a psycho and the game has nothing to do it with it