The sound comes from Flappy Bird, the mobile game that became a massive hit in 2013 and early 2014. It plays when the player successfully passes a pipe and gains a point, making it one of the game's most memorable audio cues. Even after the game was removed from app stores, clips of its scoring chime kept circulating in compilations, nostalgia edits, and meme videos. It is still used because one tiny sound immediately communicates progress, precision, and old-school mobile game frustration.