Doom cheats & more for PlayStation (PSX)

Hints

Play In Linked Mode With Only One Disc

Note: Sony does not recommend removing a spinning disc from the Playstation. 
Connect two Playstations with the linkcable, and power on both systems. Begin 
Doom on Playstation 1. Select Deathmatch or a cooperative game. Playstation 1 
should try to connect to Playstation 2. Wait a few seconds, remove the disc from 
the Playstation 1, and start the game on Playstation 2. Enter all selections 
identically to Playstation 1 and begin playing. 

The game will hang from time to time. At these points, swap the disc to the other 
Playstation after waiting a few seconds before removing the disc.

Cheats

Random Levels

At the password screen, enter "DOOMMNLxxx", where xxx the same character such as !!! or 666. Now the game will start at a random level with an unusual amount of ammunition, armor, and life.

Weapons, Ammunition, And Keys

Pause the game and press X, Triangle, L1, Up, Down, R2, Left(2). If you entered the code correctly, a message will appear on the bottom of the viewing window and will disappear the game is resumed. All weapons, ammunition for them, and keys for current level will be available.

Transparent Walls

Pause the game and press L1, R2, L2, R1, Right, Triangle, X, Right. Now your character may now see through one layer of wall or sprites.

X-Ray Specs

Pause the game and press L1, R2, L2, R1, Right, Triangle, X, Right.

Map All Items

Pause the game and press Triangle(2), L2, R2, L2, R2, R1, Circle. If you entered the code correctly, a message will appear on the bottom of the viewing window and will disappear the game is resumed. All objects including enemies, items, weapons, and secret switches will appear on the map as blue triangles.

Invincibility

Pause the game and press Down, L2, Square, R1, Right, L1, Left, Circle. If you entered the code correctly, a message will appear on the bottom of the viewing window and will disappear the game is resumed. Your character will be invincible, however unlike the invulnerability power-up, your screen will not turn white.

Level Select

Pause the game and press Right, Left, R2, R1, Triangle, L1, Circle, X. If you entered the code correctly, a menu will appear in the top half of the viewing window. Press Left and Right to select a level, and confirm your entry with Square, Circle, Triangle, or X.

Map All Lines

Pause the game and press Triangle(2), L2, R2, L2, R1, Square. To confirm correct code entry, a message will appear on the bootom of the viewing window and will dissapear the game is resumed. All walls and boundaries will appear on the map for the current stage.

Unlockables

We have no unlockables for Doom yet. If you have any unlockables please submit them.

Easter eggs

We have no easter eggs for Doom yet. If you have any unlockables please submit them.

Glitches

We have no glitches for Doom yet. If you have any unlockables please submit them.

Guides

Doom/Doom II cheat codes, all platforms

Created by: Ledmeister. Read the full guide...

Secrets per map

Created by: Ledmeister. Read the full guide...

Passwords For Maximum Starting Status, All Maps, All Skills

Created by: Ledmeister. Read the full guide...

Challenge Passwords

Created by: Ledmeister. Read the full guide...

Cheat Guide

Created by: Terminator 2. Read the full guide...

Strategy Guide

Created by: Hank Leukart. Read the full guide...