If you turn on the radio in the first half of the game, when it still gives you the news, the game's producer, Suguru Murakoshi, is said to have been caught "urinating from atop a utility pole"
Walter Sullivan is mentioned in Silent Hill 2. He is described as a psychopathic killer who chopped two children into pieces with an axe.
The game was developed alongside Silent Hill 3 as a side project that was to experiment with a new play style.
Even though the game is called "Silent Hill," you never get a chance to run around Silent hill. You do see it from a distance and read newspaper clipping about it.
The circles seen on the loading screens and the save locations during Silent Hill 3 have identical outer rings to that of the portal in the bathroom when it is completed during Apartment world.