There are many secrets that Five Nights at Freddy's: Security Breach holds that players need to uncover. One of which are the Mystery Retro Discs, all of which holds the hidden lore regarding the security guard of the Pizzaplex, Vanessa.
Players of Five Nights at Freddy's: Security Breach will encounter easter eggs and secret room along the way, including one where they can play the "Balloon World" arcade machine. But in order to unlock it, they need to look for the cutouts that are in the complex.