Below are everything you need to know about DOOM Cheat Codes for PC.
Together with games like Rise of the Triad and Wolfenstein 3D, the original DOOM for the PC redefined the first-person shooter genre. In addition to cheat codes, DOOM and DOOM II also feature bonus stages that must be found in order to be accessed.
NOTE: These cheats only work with the PC versions of DOOM and DOOM II. The PlayStation version of DOOM has its own set of hacks.
DOOM Cheat Codes
To activate cheats while playing, enter any of the following codes:
| Effect | Cheat Code |
| All Keys And Weapons | IDKFA |
| All Weapons And 200% Armor | IDFA |
| Automap | IDBEHOLDA |
| Berserk Pack | IDBEHOLDS |
| Display Location | IDMYPOS |
| Chainsaw | IDCHOPPERS |
| 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 |
While viewing the map, you must input the Show Map code. One entry of the code will display the full map; a second entry will display all foes.
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
The DOOM II cheats are compatible with all of the DOOM cheats. Moreover, DOOM II has two hidden levels that can be accessed with cheat codes:
| Unlockable | Cheat Code |
| Secret level #1 | IDCLEV31 |
| Secret level # 2 | IDCLEV32 |
