This whistle is best known from Nintendo's Pikmin series, where Captain Olimar uses it to call nearby Pikmin and keep the group together. The games began on the GameCube in 2001, and the whistle became one of the series' most recognisable gameplay sounds. Online, creators use the Olimar whistle in game memes, animation edits and pet clips because its meaning is instantly clear: come back, follow me, regroup. Its simple, high-pitched sound still works well in short videos because viewers understand the joke in a split second.