Mad Father is a Japanese horror adventure game created by Sen and released as freeware in 2012, built with RPG Maker. Players control Aya Drevis, an eleven year old girl exploring her father's mansion on the night of her mother's death anniversary. Her frightened reactions became popular clips among horror game fans because they convey fear without long dialogue. This scared sound spread through gameplay videos, fan edits and soundboards, and it remains used because Aya's voice instantly signals innocence caught in danger.