Horror School: Detective Story is a thrilling observation game on Y8.com where you take on the role of a school surveillance officer investigating eerie and unexplained anomalies. Watch multiple classrooms and hallways through security cameras, and report anything strange—whether it's a mysterious object, a distorted picture, a malfunctioning appliance, a suspicious pretender, a broken camera feed, or even a lurking ghost. But be careful: three wrong reports and it's game over. The game features three difficulty modes—Normal, Hard, and Nightmare—each increasing the tension with more frequent anomalies, longer working time, and creepier scenarios. Stay alert, trust your instincts, and uncover the truth behind the haunted halls.