Ragnarok Online is a long-running MMORPG from South Korean developer Gravity, first released in 2002 and built around job classes, grinding, and party play. Its level up cue became familiar through thousands of hours of play, as players heard it repeatedly while advancing characters and changing jobs. Clips and soundboards later carried the chime beyond the game into YouTube edits, Twitch streams, and meme videos, where the sound alone now signals achievement without needing any footage. For longtime players it also carries strong nostalgia for early online gaming.