ROTT is short for Rise Of The Triad, by Apogee Software. The best first person shooter of its time. And for all of you that still play this game here are some codes:
* - Registered only Cheat Mode; will do nothing in shareware.

\ECC or DIPSTICK = Enable/Disable Cheat Codes

Game Control
\GTL or GOTO = Warp to another level
\GOO or GOOBERS = Go back to Level 1 with only a pistol.
\REL or REEN = Re-enter Level
\L8R or GOGATES = Exit to Dos
\ECL or GOARCH = Exit Current Level
\FUN or (No Alternate) = Rotation fun. While it´s paused, move your mouse!
\EKG or (No Alternate) = Extreme Gib Mode. Worse than Ludicrous Gibs.
\LEE or MAESTRO = Game Jukebox
\HUD or WHERE = Coordinate Display On/Off

Play Mode
\WWW or CHOJIN = Woundless With Weapons
\GOD or TOOSAD = God Mode (Temporary Invunerability)
\DOG or WOOF = Dog Mode (Temporary Invulerability) *
\MER or FLYBOY = Mercury Mode (Flying)
\SHR or BADTRIP = Shrooms Mode
\ELA or BOING = Elasto Mode (No Friction and you bounce)
\RFA or SPEED = Enable Autorun
\PAN or PANIC = Reset to normal, full health, no modes, keys, or guns
\OOF or WHACK = Hurt Player 10%
\DIE or 86ME = Kill Player
\MAP or CARTIER = Show Entire Map (Does not work from the map)
\CAM or RIDE = Missile Cam On/Off

\DON or DIMON = Light Diminishing On
\DOF or DIMOFF = Light Diminishing Off
\FON or LONDON = Fog On
\FOF or NODNOL = Fog Off
\SON or SHINEON = Light Sourcing On
\SOF or SHINEOFF = Light Sourcing Off
\CON or GOTA386 = Turn off Floor and Ceiling Textures
\COF or GOTA486 = Turn on Floor and Ceiling Textures

\BAR or SHOOTME = Bulletproof Armor
\FAR or BURNME = Asbestos Armor
\GAR or LUNGDUNG = Gas Mask
\GAI or SIXTOYS = Items Aplenty (Keys and Bulletproof Armor)
\OFP or HUNTPACK = Outfit Player (BulletProof Armor, Keys, HeatSeeker)(In reg version, this gives you a split missile)

\GW2 or JOHNWOO = Double Pistols
\GW3 or PLUGME = MP40 Machine Gun
\GW4 or VANILLA = Bazooka
\GW5 or HOTTIMES = Heatseeker
\GW6 or BOOZE = Drunk Missile
\GW7 or FIREBOMB = Firebomb
\GW8 or BONES = FlameWall
\GWC or SEEYA = Hand of God (Permanent God Mode)
\GWA or SPLIT = Split Missile *
\GWB or KESOFDEATH = Kinetic Energy Sphere *
\GWC or HOMERUN = Excalibat *
\GWD or CUJO = Dog Weapon (Permanent Dog Mode, sort of) *