This sound is associated with the zombie vocals from Valve's Half-Life series, especially the well-known idea that the cries contain human pleas when reversed. That detail made the audio memorable among players and helped it spread through game forums, YouTube breakdowns, and horror gaming compilations. It remains popular because it is both scary and sad, giving editors a more unsettling feeling than a standard scream. Creators often pair it with other horror game audio such as a FNAF Jumpscare Scream when building tense meme edits or spooky retrospectives.