The level up chime comes from Minecraft, where it plays when the player gains enough experience to reach the next level. Its simple, positive tone made it easy to reuse in short-form edits, gaming montages, and meme clips as a universal sign of progress. Online, it often fills the same role as the ROBLOX oof does for failure, but for success instead. The sound stays popular because even people who do not play Minecraft usually understand the joke immediately.