In a now deleted project Scratch made, there was a survival simulator that acted like an entire ecosystem but for scratch sprites. Each sprite had different stats and had different roles in the ecosystem to teach children about how wildlife acted. The sprite with the best stats were Tera's and they acted like the apex predator. One Tera was different though. It would "kill" and eat other Tera's and didn't stop hunting even when it wasn't hungry. Before the devs were able to stop it, it had killed every single sprite in the ecosystem. They deleted it and started repopulating the project with new sprites, but that did not help. Every single time they tried to repopulate the project a Tera would become a merciless killer. They tried removing all of the Tera sprites but then the Nano's acted strange and when they were removed the Giga's started acting strange. No matter what, one of the species would go mad and kill everything in sight. Eventually, nothing but Tera's could even be populated. The devs, frustrated and tired, decided to trash the project. A terminal madness lays in the trash bin now.
