The Guardian theme comes from The Legend of Zelda: Breath of the Wild, released by Nintendo in 2017. Players hear it when a Guardian detects Link, which made the cue famous for triggering instant stress and urgency. Because that musical warning is so recognizable, it spread into memes, reaction edits, and gaming compilations as a shorthand for sudden danger. It is still widely used because even short clips immediately communicate that something threatening has locked onto the person on screen.