Fortnite, developed by Epic Games and released in 2017, uses short musical cues to mark progression, and the level-up chime is one of its most recognisable rewards. As Fortnite grew into a global battle royale phenomenon, clips of level-ups, battle pass tiers and unlocks spread across YouTube, Twitch and TikTok, carrying the sound with them. Creators outside the game then reused it as shorthand for any achievement, from fitness goals to school results, which is why it remains popular long after players first heard it in a match.