Quake ^(PC)

Crypt of Decay mode

This is even harder than the hidden Nightmare skill. To reach it, follow
the instructions for the Nightmare difficulty, but when you start down the
hallway to the portal before you turn, there will be a wall decoration type
thing. Shoot this with your shotgun, you will know if you did it because
the wall will bleed and a message saying you have selected Crypt of Decay
mode pops up. Then proceed down the hallway to the portal and choose your
episode.

Console Commands

To enter these codes, press the Console button (~) and type these codes at the prompt. I believe the numbers are default values, but the submitter wasn't clear on this.

SV_NOSTEP, 0, You cant climb stairs

SV_IDEALSTEPSCALE, 0,8, Sets how much you pitch when you walk in stairs

SV_AIM, 0,93, ?

SV_STOPSPEED, 100, The time it takes to stop

SV_FRICTION, 4, Sets friction

SV_GRAVITY, 800, Sets gravity (Great for jumping :-) )

SV_MAXSPEED, 320, Limits player maxspeed

CL_ROLLANGLE, 2.0 Sets how much you roll when strafing (10 Feels COOL)

CL_TICRATE, 0,03, ?

CL_YAWSPEED, 140, Sets yaw speed

CL_UPSPEED, 200, Sets upbutton speed (Thats also great for jumping :-) )

CL_PITCHSPEED, 100, Viewpitch buttons speed

CL_ANGLESPEEDKEY, 1,5, Sets yaw speed

CL_SHOWNET, 0, ?

CL_FORWARDSPEED, 320, Your own speed

CL_BACKSPEED, 320, Same but backwards

CL_SIDESPEED, 320, Strifing speed

CL_NOLERP, 0, ?

CL_MOVESPEEDKEY, 2.0, ?

BIND, Sets game keys

QUIT, Exits the game

ENTITIES, Shows map info ?

R_CSHIFT, ?

TIMEREFRESH, Shows FPS

IMPULSE(1-9), Changes weapon

IMPULSE -1, Quad Damage

POINTFILE !Hangs my computer!

ALIAS, ?

SIZEDOWN, Same as - in play ( Can at some times make a weird zoom )

SIZEUP, Same as + in play ( when using parameters )

CONNECT, Connects to server

DISCONNECT, Disconnects from server

FOV, ?

GAMMA, ?, Sets gamma correction

HOSTNAME, Sets your hostname

NAME, Sets your name

LOOKSPRING, Makes your "freelook" button auto-center

BF, ?

NUMCHANNELS, Sets number of sound channels to mix

MESSAGEMODE, Starts messagemode ?

SAY, Sends message

SOUNDINFO, Shows soundinfo

SBINFO, Shows info about Sound Blasters

STOPSOUND, ?

SLIST, Shows a list of available servers

SIMSOUND, Isolates hardware problems on soundcard

SSPEED, Sets play speed 

SBITS, Sets bits 8 or 16

SMONO, Plays all sounds in MONO

PLAY, Plays sound at 100% volume 

PLAYVOL, Plays sound at specified volume

SOUNDLIST, Shows all loaded sounds

SAVESND, Saves sound as RAW file Ex: savesnd american/gib.wav

NOSOUND, Set to 1 and no sounds will be loaded

DECIMATE_SFX, Set to 1 and all sounds will be played at lowest possible

sound rate

DECIMATE_SFX_SPEED, Sets the value DECIMATE_SFX will lower sound rate to

DECIMATE_SFX_WIDTH, Set to 1 and all sounds will be playes as 8 bit sounds

DMASIZE, Sets DMA buffer size (2048,4096,8192,16384,32768 and 65536)

VID_DESCRIBECURRENTMODE, Lists the description for the current video mode

VID_DESCRIBEMODE, Lists the description for the specified video mode

VID_DESCRIBEMODES, Lists descriptions for all available video modes

VID_MODE, Sets the display to the specified mode

VID_NUMMODES, Reports the total number of modes available

VID_TESTMODE, Tries a video mode for five seconds

VID_WAIT, 0: no wait 1: wait for vertical sync 2: wait for display enable 

R_SPEEDS, Displays drawing speeds 

R_DRAWFLAT, Draw view as flat-colored polygons or texture-mapped polygons

R_CLEARCOLOR, Change color of dead space outside a map

HOST_SPEEDS, Displays host speeds

COLOR xx, Sets your color in the game to xx

FRAGLIMIT, 20, Sets the amount of frags that will end the game

TIMELIMIT, Sets the amount of time the game will last before quitting 

TEAMPLAY, 0, Sets teamplay

PAUSABLE, 0, Sets whether the game will be pausable or not

HOST_FRAMERATE, Changes the speed of the game (0 - 0.1)

CLEAR, Clears the console buffer

CROSSHAIR, 1, on-screen crosshairs (great for targetting)

EXEC, Executes a configuration file

SCR_CONSPEED, Sets the consoles scrollspeed

SCR_SHOWCACHETRASH, 1, ?

SCR_OFSZ, 0, Your view goes higer or lower

SCR_XPARCON, 0, ?

SCR_COLORCON, 251, ?

R_WAVE, 0, Makes everything wavy

R_EDGECOUNT, 0, Counts map things in current view

R_ALIASSTATS, 0, Shows amount of aliases on screen

R_SHOWPOLYS, 0, Shows polys - lines are drawn around "linedefs"

R_DSPEEDS 0, Shows unknown info

R_FULLBRIGHT, 0, Makes everything bright (Great for dark screens)

R_GRAPHHEIGHT, 10, ?

HOST_LINEREFRESH, ?

Ziggurat Vertigo

In episode 1 at "The Grizzly Grotto", after you hit all quake switches after going up the elevator, doors will open to your left and right. Enter one and hit the switch. Do the same thing again on the other side. It will say "A secret cave has been opened." Go to the water. when you enter, look around. You will see a cave opened where a portal leads you to Ziggurat Vertigo.

Feign Death

This is pretty strange and I can't really figure out if it is a secret or a bug but here it is. Type in  "Give health". You die but you are still alive. It looks like you are dead and bad guys can not see you but you can shoot. If your health goes down the slightest you are really dead but until then you aren't. To move, you put god mode on and get your rocket launcher out. Shoot the wall and it will richochet in your favored direction.

Nightmare Mode

Go to the episode 4 entrance and enter the water. Now backup against the wall as if trying to go back the other way. Stay there until you fall again. You should land on a big piece of wood. Walk along the side to find another entrance that leads to the Nightmare gate.

Runes

If you look carefully you'll find four runes hidden in the world of Quake. Here's what they do:

Elder Magic: Provides you with 150-250 points of energy and 150 armor.

Black Magic: Your attacks do 3x normal damage.

Hell Magic: Reduces ammo usage.

Earth Magic: Protects you from most damage, but won't save you from quad attacks.

Secret Level

To find The Underearth level you must be in The Crypt of Decay. When you see the exit, go straight back. You should be in a room with boxes and a button on the ceiling. Shoot the button, then jump on the boxes into the secret room. Push the button, then go to the hidden "Well of Wishes." Now look around the walls and a wall will open for you. When you get out, there will be a underwater doorway that leads to the secret level.

Power Up Cheat (with Armor)

This code has been tested with version 1.06.

Beat any episode of Quake and save as much ammo and armor as possible. After you return to the level select screen, save your game and quit out of the game entirely. Now re-enter the game and open that save file. Walk backwards into the teleporter and return to the first telepad (where you start the game.) Go toward the Hard difficultly and fall into the lava.

When you restart, you will respawn with all your health, ammo, armor and weapons! You will lose your rune but that's alright compared to the power you have to enter later episodes.

Cheat Codes

To use these codes, press '~' while playing to call up the console, then type the desired code.

Code             Effect

GOD              Invincibility toggled on or off.

FLY              Toggles flight

GIVE S#          Gain # shells

GIVE H#          Gain # health

GIVE N#          Gain # nails

GIVE R#          Gain # rockets

GIVE C#          Gain # cells

GIVE #           Get weapon #

KILL             Commit suicide

NOCLIP           Go through walls.

NOTARGET         Monsters won't attack you unless provoked.

MAP ExMy         Warp to episode X, mission Y

SKILL #          Sets difficulty level (# = 0-3)

IMPULSE 9        All weapons

IMPULSE 11       Display runes (you don't actually get them)

IMPULSE 13       Silver key

IMPULSE 14       Gold key

IMPULSE 255      Quad Damage!!!!

SV_GRAVITY -50   Reduces gravity by 50%. Replace "-50" with any number.

Hint: To make these codes easier to enter you can bind them to a single key. To do so, enter the console and type bind (any key) "cheat". For example, to bind the cheat for all weapons to the backslash (), type:

bind "impulse 9"

After that, every time you want to get all keys, guns, and ammo, just hit the key, and you've got it.

Hidden Pictures

The Crypt of Decay:

To find the "Dopefish," when you see the exit, turn back go onto the bridge. You should see a quad power-up on a ledge. When you get on the ledge, you will see an extremly small ledge that you can barely walk on. At the end, you can jump into "The Well of Wishes." The Dopefish will be there.

The Underearth

To find the weird picture, find all the faces on the walls and shoot each once. You will know which ones you shot because blood will come out only the first time. When you shoot all of them, look for a hallway with a short opening and a villain on each side. One of them will open to a small room with a picture in it.

Beat Shub-Niggurath

When you enter the room with Shub-Niggurath you'll see a spiked ball if you play through the level. When it goes through Shub-Niggurath, walk through the teleporter on the walkway.