All games
1994 · Shooter
Heretic
Type them during a level. They are off on the highest skill, except the map code.
PC
How to enter
Type during play. Not in a menu.
God mode
quicken
Full health
ponce
All weapons and armor
rambo
All keys
skel
Noclip
kitty
Kill every monster on the level
massacre
Full map, then things, then off
ravmap
Turn into a chicken
cockadoodledoo
Kill yourself
iddqd
The Doom word is a joke here. It does the opposite.