Deltarune is Toby Fox's follow up to Undertale, first released in 2018, and its opening retells an ancient prophecy about heroes appearing to balance light and dark. That legend frames the whole adventure and its Delta Rune symbol, so fans associate the narration with the start of every chapter. Clips of the sequence spread through fan edits, lore videos and meme soundboards because the solemn delivery contrasts so well with everyday situations, keeping the moment recognisable even to players who have not replayed the intro in years.