The Best Classic DOOM Cheat Codes for PC

God mode, level select, and more cheats for DOOM and DOOM II on PC

Doom soldier shooting hordes of demons
Id Software

The original DOOM for PC revolutionized the first-person shooter genre along with similar titles like Rise of the Triad and Wolfenstein 3D. In addition to cheat codes, DOOM and DOOM II have bonus stages that can only be unlocked by finding the secret exits in certain levels.

These cheats apply exclusively to the original DOOM and DOOM II for PC. There are separate cheats for the PlayStation version of DOOM.

DOOM Cheat Codes

Type any of the codes below during gameplay to activate cheats:

Effect Cheat Code
All Keys And Weapons IDKFA
All Weapons And 200% Armor IDFA
Berserk Pack IDBEHOLDS
Display Location IDMYPOS
God Mode (Invincibility) IDDQD
Light Amplification Goggles IDBEHOLDL
No Clipping (Walk Through Objects) IDCLIP
Change Music (Episode #, Level #) IDMUS##
Radiation Suit IDBEHOLDR
Temporary Invisibility IDBEHOLDI
Temporary Invulnerability IDBEHOLDV
Level Warp (Episode #, Level #) IDCLEV##
Display Entire Map and Enemies IDDT

The Display Map code must be entered while looking at the map. Enter the code once to reveal the entire map, then enter it again to show all enemies.

DOOM Secret Levels

Locate the secret exits in certain levels to unlock extra stages:

Secret Level How to Unlock
E1M9, Military Base Find the secret exit in E1M3, Toxin Refinery (across the slime pit near the entrance).
E2M9, Fortress of Mystery Find the secret exit in E2M5, Command Center (walk through the red panel wall and follow the teleporters). 
E3M9, Warrens Find the secret exit in E3M6, Mt. Erebus (flip the switch inside the blue box in the water).
E4M9, Fear Find the secret exit in E4M2, Perfect Hatred (just north of the Cyberdemon).

DOOM II Cheat Codes

All of the cheat codes for DOOM work with DOOM II. There are also two secret levels in DOOM II that can be accessed with cheat codes:

Unlockable Cheat Code
Secret level #1 IDCLEV31
Secret level # 2 IDCLEV32