Doom cheat codes: IDDQD, IDKFA and every PC code
Every cheat code in the original 1993 PC Doom, what it does and how to type it.
Original 1993 PC Doom campaign: Knee-Deep in the Dead, The Shores of Hell and Inferno. Shareware includes only the first episode. Ultimate Doom’s fourth episode, Doom II weapons and monsters, and modern port enhancements are outside this hub.
How to enter a code
Type the letters on the keyboard during play, not in a menu or console. There is no Enter key: the code takes effect as soon as the last letter is typed and a message appears at the top of the screen. Codes do not work on Nightmare! difficulty, except IDDT and IDCLEV.
IDDQD: god mode
Makes you invulnerable to ordinary damage and restores health to 100%. Type it again to switch it off. The status-bar face shows glowing eyes while it is active.
IDKFA: all weapons, ammo, armour and keys
Gives every weapon available in your version, full ammunition, 200% armour and all three keycards. IDFA does the same without the keys.
IDSPISPOPD: no clipping
Lets you walk through walls. Original Doom uses IDSPISPOPD; IDCLIP is the Doom II spelling.
IDCLEV: warp to a level
Type IDCLEV followed by the episode and map number, for example IDCLEV13 for E1M3: Toxin Refinery. Episode 4 maps exist only in The Ultimate Doom.
IDBEHOLD: power-ups
Type IDBEHOLD and a prompt appears. Add one letter: V invulnerability, S berserk strength, I partial invisibility, R radiation suit, A computer area map, L light amplification visor.
IDDT: reveal the map
Open the automap and type IDDT to show the whole level. Type it again to also show monsters and items as markers; a third time returns to normal.
Other codes
IDCHOPPERS gives the chainsaw. IDMYPOS shows your map coordinates. IDMUS followed by an episode and map number, such as IDMUS11, changes the music.
More Doom quick answers
Where to find the Doom secret exits and secret levelsHow to unlock every Doom episode and secret levelType codes steadily; a wrong letter means starting the code again. Save before using IDCLEV, because it leaves the current map at once.
Picture details
Game artwork belongs to its respective rights holders.