Quake

To activate the codes listed, press the key under the Esc key to enter the Quake Console. Once the Console appears, type in the code and press Return. To leave the Console and resume playing the game, press the Esc key once more.

cheat code-quake result

COLORxx       changes player clothing color; xx is a range of colors from 00 to 13
FLY           toggles flying mode on and off
GAMMAx.x      alters screen brightness; x.x is brightness level from 0.0 to 1.0
GOD           toggles god mode on and off
NAME          changes player name
NOCLIP        toggles clipping on and off
STATUS        displays info on the current game
SV_GRAVITYxxx gravity; xxx represents a number from 00 to 850, where 00 equals no gravity and 850 is normal gravity
VERSION       displays Quake version info
IMPULSE 9     gives player all weapons and ammunition
IMPULSE 255   gives you Quad Damage

Press the button under esc. When you get to the console, type in: impulse 11. It will give you one of four runes. If you want to get all four runes, just type this in four times, but not at the same time! If you want quad damage, and all four runes, type in: impulse 1. Thats all I know.