Doom

During game play, type these on the keyboard: IDDQD -- Invulnerability IDBEHOLDI -- Temporary invisibility IDBEHOLDR -- Temporary radiation suit IDBEHOLDS -- Temporary berserk IDBEHOLDA -- Temporary automap IDBEHOLDV -- Temporary invulnerability IDBEHOLDL -- Temporary light IDKFA -- Full health, ammo, weapons, armor and keys IDFA -- Full health, ammo, weapons, and armor IDDT -- Change map detail IDCHOPPERS -- Gain chainsaw IDCLEVxx -- Warp to level 'xx' where xx is 01 to 19 IDMYPOS -- Displays your position and bearing IDMUSxx -- Music select. 'xx' is the level who's song you want. IDSPISPOPD -- Walk through walls! Secret Level To teleport directly to the secret level, type "idclev19" while playing.