The coin sound comes from Super Mario Bros, released by Nintendo for the Nintendo Entertainment System in 1985, where collecting a coin awarded points and an extra life after one hundred coins. As Mario became Nintendo's most recognisable character, the short ding travelled with the series through sequels, remakes and spin-offs, and later into online videos, streams and short-form clips. Its meaning stayed simple and universal, so creators still use it today to signal a gain, a win or a satisfying small success without needing any explanation.