Castlevania Symphony of the Night launched for PlayStation in 1997 and became famous for secrets, including audio hidden outside the game itself. Because PlayStation discs used a format readable by CD players, curious owners who tried playing the disc for music found a bonus track waiting instead of silence or data noise. Fans ripped and shared that discovery in forums and videos as physical media collecting grew online, and the clip survived as a shorthand for an era when games carried surprises that menus never mentioned.