To use one of these cheat codes, simply type in the letters shown while playing. Note: The cheat codes do not work while playing any kind of multi-player game, or while playing on Nightmare difficulty level. Except where otherwise stated, all codes work the same for DOOM and DOOM 2. Code: What it does: idbehold displays a menu at the top of the screen, select on of the following letters: S,V,I,R,A,L: (Each replicates a "power up" artifact. See Powerups for details on each item.) S = Strength - Berserk Strength V = inVulnerability - Invulnerability Sphere I = partial Invisibility - Blur Sphere A = Automap - Computer Map R = Radiation Suit L = Light Amplification Visor idchoppers Gives you a chainsaw and prints "Doesn't suck, GM" on your screen. idclev1 DOOM 1 : Warps to the Episode (1-3) and Level (1 - 9) you want to play; ie: "idclev38" warps you to E3M8. DOOM 2 : Warps you to the map (01 - 32) you want to play. Be sure to preface all numbers less than ten with a zero; ie: 1 = '01'. idclip DOOM 2 only: No clipping - lets you walk through walls. iddqd Degreeless Mode - "god mode", 100% health, you can not be damaged except by: 1 - Teleport Frags 2 - A special sector type that ends the game after it kills you (DOOM 1, E1M8). iddt1 Changes the automap between three states: Normal, All Lines, and All Lines And Things. (The arrow that is "you" will have "ddt" within it when this code is in effect). idfa Gives you all weapons, armor, and ammo, but no keys (added with the 1.4b version of DOOM 1). idkfa Give you all weapons, armor, ammo and keys. idmus DOOM 2 only: Changes the music to the map number typed in (01 - 32). (This cheat can be called in DOOM, but it will crash the game.) idmypos Displays your current position and facing in hexadecimal. idspispopd DOOM only: Same as idclip (see note below) 1This cheat code works in Nightmare.
Notes on some of the Cheat Codes: idchoppers - idchoppers was named after a game that a friend of Dave Taylor's made for a programming competition. Dave's friend, GM, did not feel the game was very good as it was turned in before it was completed to his (GM's) satisfaction. iddt - This cheat code is named after Dave Taylor, who wrote the cheat codes as well as the map code for DOOM/DOOM 2. idspispopd - This unwieldy name was derived from a (then) fictitious game called "Smashing Pumpkins Into Small Piles of Putrid Debris". This started out as a joke in the comp.sys.ibm.pc.games.action Usenet newsgroup during the end of November of 1993, just before the release of the shareware version of DOOM. Dave Taylor thought it was so funny that he included it as a cheat code in DOOM. It was replaced in DOOM 2 with IDCLIP, which someone on the Net suggested meant "Crushing Llamas Into Paté".