This code puts the character in a "god mode" or invulnirable mode. The player is hit, but not affected by any gunshots, projectiles, harmful surfaces, or explosions.

This code gives the player all firearms and ammo.

This code is the same as above, but also gives the player all keys.

This code gives the player the Chainsaw weapon.

This code allows the player to pass through walls and get to higher platforms.

This code teleports the player to a certain episode and level (Doom) or certain level (Doom II). The # symbols are replaced with numbers. For Doom, IDCLEV24 would teleport the player to Level 4 on episode 2. In Doom II, IDCLEV24 would teleport the player to level 24.

This code gives the player temporary powerups. The ? symbol is replaced by certain letters.

• - Automap: allows player to see all walls on the map
• - Invisibility: the player is semi-invisible
• - Light amplification: all lighting is as bright as possible
• - Radiation Suit: the player is invulnirable to harmful surfaces
• - Berserk: punching power is increased dramatically
• - Invulnirable: like the IDDQD code

This code shows all walls on the map. If typed in again, the map then shows all objects and which direction they are facing. If typed in once more, the map returns to the state it was originally in.

This code shows the players coordinates.

This code changes the music playing in the background to the specified level. The # symbols would be changed to numbers. IDMUS24 would play Level 24's music.