Metroid Prime, released by Nintendo for the GameCube in 2002, introduced the Metroid series in first-person, and its Metroids kept their distinctive high-pitched cry. The creatures are parasitic, floating predators that drain energy from their victims, and their screech became closely associated with sudden danger in the game. As gameplay clips, soundboards, and short-form edits spread online, the brief cry was lifted as a standalone effect. It remains useful because it is instantly recognisable to players, extremely short, and conveys alarm without words.