The achievement unlocked sound comes from the Xbox 360 interface and became closely associated with the console's achievement system during the late 2000s and early 2010s. As achievement culture grew, the chime spread beyond gameplay into memes, compilations and short-form edits. People still use it because the sound instantly communicates "reward earned" in less than a second, making it ideal for comedic timing. It sits in the same family of recognizable game UI audio as the Gta v notification, where a tiny cue carries a lot of meaning.