Knightmare was a British children's adventure game show in which a blindfolded dungeoneer explored a computer-generated dungeon, guided by teammates watching from the studio. The life force bar showed how much health the dungeoneer had left, and this sequence accompanied its decline during the show's early series. Fans later lifted the cue for soundboards and retro edits because it is instantly recognisable to viewers who grew up with the programme. It survives online mainly as nostalgic shorthand for a quest going wrong, rather than as a general meme sound.