RWBY is the Rooster Teeth animated series that follows Ruby Rose and her team at Beacon Academy, and RWBY: Grimm Eclipse is the action game based on that world. The level-up cue comes from the game's progression system, signalling that a character has grown stronger after combat. Fans lifted the short jingle into edits and soundboards, where its bright game sound became shorthand for progress, wins, and personal milestones. It remains popular because it is instantly recognisable to RWBY fans and immediately clear to anyone who plays games.