Sounds of Shadows

An echolocation-based stealth horror game for Windows. You are B4-BY, a sightless maintenance robot in an underground science facility. While you were powered down, calamity struck the facility's populace. For most of the scientists, it is too late.... But one of them has survived, and it is your task to find and save her. However, something roams the dark and quiet corridors of the facility. You are not alone.