Also, in some source ports, when a temporary powerup (e.g. In some source ports, radiation suit effects obtained using idbeholdr protect the player from all radiation damage, even on surfaces which inflict 20% damage per second. For example, in France, idkfa may be idkfq, because of the AZERTY keyboard layout commonly used there. In some ports and in the original executables, cheat codes may be different on non-QWERTY keyboards. However, many source ports enable cheats for all skill levels. All of the codes for the original game work in all ports, unless otherwise noted.Ĭheat codes in Vanilla Doom are disabled on the 'Nightmare!' skill level, except for the iddt and idclev cheats. The status bar, face, and ingame view may also change, depending on the effects of the code. After the last letter has been entered, a message of acknowledgement will appear at the top of the screen.

To activate a cheat in most versions, one simply types the code while playing (this also applies while in automap mode).

Doom 2 cheats