Quake 2

Press ~ to bring up the command line, and type in these codes:
              
GOD			God Mode Toggle
GIVE ALL		All Items
GIVE WEAPONS		All Weapons
GIVE AMMO		All Ammo
GIVE ARMOR		200 Body Armor
GIVE BODY ARMOR		Body Armor +1
GIVE HEALTH		100 Health
NOTARGET		No Target Mode Toggle         
NOCLIP			No Clip Mode Toggle
GIVE JACKET ARMOR	Jacket Armor
GIVE BLASTER		Blaster
GIVE SHOTGUN		Shotgun
GIVE SUPER SHOTGUN	Super Shotgun
GIVE MACHINEGUN		Machinegun
GIVE CHAINGUN		Chaingun
GIVE GRENADE LAUNCHER	Grenade Launcher
GIVE ROCKET LAUNCHER	Rocket Launcher
GIVE RAILGUN		Railgun
GIVE BFG10K		BFG10k
GIVE SHELLS		10 Shells
GIVE BULLETS		50 Bullets
GIVE CELLS		50 Cells
GIVE CRENADES		5 Grenades
GIVE ROCKETS		5 Rockets
GIVE SLUGS		10 Slugs
GIVE QUAD DAMAGE	Quad Damage
GIVE INVULNERABILITY	Invulnerability
GIVE SILENCER		Silencer
GIVE REBREATHER		Rebreather
GIVE ENVIRONMENT SUIT	Environment Suit
GIVE ANCIENT HEAD	Ancient Head
GIVE ADRENALINE		Adrenaline
GIVE BANDOLIER		Bandolier
GIVE AMMO PACK		Ammo Pack
GIVE DATA CD		Data CD
GIVE POWER CUBE		Power Cube
GIVE PYRAMID KEY	Pyramid Key
GIVE DATA SPINNER	Data Spinner
GIVE AIRSTRIKE MARKER	AirStrike Marker
GIVE BLUE KEY		Blue Key
GIVE RED KEY		Red Key
GIVE SECURITY PASS	Security Pass
GIVE COMMANDER'S HEAD	Commander's Head
GIVE POWER SHIELD	Power Shield
GIVE ARMOR SHARD	Armor Shard
GIVE COMBAT ARMOR	Combat Armor


Secret Area

After defeating the end game boss in the level "Final Showdown", 
head under where you killed him (there should be two areas where 
you can step down into a cellar like area). Head through here 
until you reach a new passageway with a breakable wall at the end.
Bust through the wall and you will enter the id Gallery, a collection
of photos of Quake II's designers. If you follow a ladder down even 
more, you can enter an unusual room filled with a Quake II enemy 
and some ... well, some friends. 


Level Names

To jump to any level you want, just type 
name in the console

UNIT 1			BASE UNIT
Outer Base		base1.bsp 
Installation		base2.bsp 
Comm Center		base3.bsp 
Lost Station		train.bsp (secret level)

UNIT 2			WAREHOUSE UNIT
Ammo Depot		bunk1.bsp 
Supply Station		ware1.bsp 
Warehouse		ware2.bsp 

UNIT 3			JAIL UNIT
Main Gate		jail1.bsp 
Destination Center	jail2.bsp 
Security Complex	jail3.bsp 
Torture Chambers	jail4.bsp 
Guard House		jail5.asp 
Grid Control		security.bsp

UNIT 4			MINE UNIT
Mine Entrance		mintro.asp 
Upper Mines		mine1.bsp 
Borehole		mine2.bsp 
Drilling Area		mine3.bsp 
Lower Mines		mine4.bsp 

UNIT 5			FACTORY UNIT
Receiving Center	fact1.bsp 
Sudden Death		fact3.bsp (secret level)
Processing Plant	fact2.bsp 

UNIT 6			POWER UNIT/BIG GUN
Power Plant		power1.bsp 
The Reactor		power2.bsp 
Cooling Facility	cool1.bsp 
Toxic Waste Dump	waste1.bsp 
Pumping Station 1	waste2.bsp 
Pumping Station 2	waste3.bsp 
Big Gun			biggun.bsp 

UNIT 7			HANGER UNIT 
Outer Hangar		hangar1.bsp 
Comm Satelite		space.bsp (secret level)
Research Lab		lab.bsp 
Inner Hangar		hangar2.bsp 
Launch Command		command.bsp 
Outlands		strike.bsp

UNIT 8			CITY UNIT
Outer Courts		city1.bsp 
Lower Palace		city2.bsp 
Upper Palace		city3.bsp 

UNIT 9			BOSS LEVELS
Inner Chamber		boss1.bsp 
Final Showdown		boss2.bsp