Outlast: Whistleblower is the downloadable expansion to Red Barrels' first-person survival horror game Outlast, following events inside the Mount Massive Asylum. The expansion became a favourite source for horror edits because its atmosphere relies on vulnerability, darkness and sudden danger rather than combat. Online, short clips like this one are reused by gamers, streamers and video editors to signal that something frightening is about to happen, keeping the game's tense reputation alive long after its original release.