Cheat mode
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "options.ini" file in the game folder. Add the following line to the file if it does not exist, or edit the existing line to match:
SET DX_CONFIG_BULLET 100
This sets the amount of ammunition you get when you pick it up. Usually, the game can set it to a maximum of x3.
Completion bonuses
Successfully complete the game. Start another game and enter the extra options menu to access new features.
A "Bullet Adjust" option can be set, allowing the normal amount of ammunition found at a location to be doubled or tripled.
A "Noise Effect" option can be toggled.
Another new option can be toggled, allowing scenes to be viewed without distortion.
Additional riddle difficulty
Successfully complete the game under the easy, normal, and hard riddle difficulty settings. Select the hard riddle difficulty again and begin a new game with a new combination of riddles.
UFO ending
Successfully complete the game once with the Leave ending (where James and Laura leave the town), then complete it again with the Rebirth ending (where James is going to revive Mary). Start the game again and a Blue Gem should appear in the bathroom where you start. Use the Blue Gem at the evil hospital garden, the dock (before you get on the boat), and room 312 before the intermission sequence. After using it in room 312, the UFO ending will begin.
Reveal signs
Unlock all five endings, then start a new game. All signs will now be revealed.
Book Of Lost Memories
Successfully complete the game. Start a new game and look for the newspaper stand near the Texxon Gas Station. The Book Of Lost Memories can be found inside.
Book Of The Crimson Ceremony
This book can be found in the reading room on the second floor of the "Nightmare" hotel.
Chain Saw
Successfully complete the game under the normal difficulty and normal riddle difficulty settings. Start a new game to find the Chain Saw among logs before the cemetery.
To get the Chain Saw easier, complete the game under the easy difficulty and easy riddle difficulty settings. Get the "leaving" ending (where he leaves the town with the girl). The Chain Saw will be located in the section just after the first graveyard. You will hear it, and it will be sawing away on some logs.
Dog Key
Successfully complete the game with the "Rebirth" ending. Start a new game and a dog house will now appear near Jack's Inn and the gas station. Look inside the dog house to find the Dog Key. It is used to open the observation room in the ''nightmare'' hotel.
Hyper Spray
Successfully complete the game two times. Start a new game to find the Hyper Spray on the south side of the motor home.
Obsidian Goblet
Successfully complete the game. Start a new game and enter the Historical Society building. The Obsidian Goblet can be found on a shelf.
White Chrism
Successfully complete the game. Start a new game to find White Chrism vial in the kitchen of apartment 105 in Blue Creek Apartments.
Introduction FMV sequence audio
If you wait at the title screen for awhile, the introduction FMV sequence will begin. In some scenes, there will be no audio. Successfully complete the game one time and the audio will be restored to those scenes.
Joke ending
To view the sixth secret joke ending, use the Blue Gem at Alternate Brook Haven Hospital's garden, the dock before getting on the boat), and room 312 in the Lakeview Hotel. Once you use it in room 312, the game will end and the joke ending will appear.