Play Novel: Silent Hill Cheats

Chapter Select
Get to any screen and while the text is done typing, press select to find the list of the chapters you have seen before.

Alternate Characters - Play as Cybil Bennet
To play as Cybil Bennet, beat the game with any ending as Harry Mason. Select the file you just beat the game with and select the top option (continue). When you see the red book with Harry on it, press right to select the green book with Cybil on it.

Play as Survivor
To play as a survivor in Silent Hill who has his own story, beat the game with Cybil with any ending. If you have a Mobil Adapter (Japan only) on your GBA, you will be asked if you'd like to download the survivor scenario. Choose yes, and it'll download. Load the file you played as Cybil in and at the red book with Harry on it, press left to select the yellow book.