The castle clear fanfare comes from Super Mario Bros., released by Nintendo for the NES in 1985. Composed by Koji Kondo, the short jingle plays after Mario defeats a castle boss and grabs the axe to collapse the bridge. As Mario gameplay spread through Let's Plays, speedruns and meme edits, the sound became shorthand for clearing any difficult stage. Creators still use the 8-bit version today because its retro tone reads instantly as victory, even for viewers who have never played the original.