All codes are typed in on the keyboard during normal play.
- quicken - God mode
- rambo - Full weapons/ammo
- ravskel - Give all keys
- ravmap - Display full map
- Enter it a second time to display items/enemies on the map.
- Enter it a third time to return the map display to normal.
- kitty - No clipping (walk through walls)
- gimmie_ - when followed by a letter A-J, give an item:
- a - Ring of Invulnerability
- b - Shadowsphere
- c - Quartz Flask
- d - Mystic Urn
- e - Tome of Power
- f - Torch
- g - Time Bomb of the Ancients
- h - Morph Ovum
- i - Wings of Wrath
- j - Chaos Device
- engageXY - Warp to Episode X, level Y
Entering these Doom cheat codes will have some unexpected effects:
- iddqd - Instantly kills player
- idkfa - Removes all weapons/ammo from player