Q

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CODE	WHAT IT DOES
god	invulnerability (god mode)
fly	lets you fly around
impulse 9	all weapons & keys
impulse 255	quad damage
give x	gives the numbered weapon (ie. give 7 would give you the rocket launcher).
noclip	walk through walls

Quake 2

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give all	All Item
give health	Health
give weapons	All Weapons
give ammo	All Ammo
give armor	Body Armor
god	God Mode
notarget	No Target Mode
noclip	Walk Through Walls
give quad damage	Quad Damage
give silencer	Silencer
give rebreather	Rebreather
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