Tyrian

* Cheat Codes:
TECHNO : Experimental PQZ
STORMWIND : Stormwind - The Elemental
UNKNOWN : TX SilverCloud
ENEMY : Captured U-Fighter
WEIRD : Foodship Nine
STEALTH : Ninja Star
DESTRUCT : Speed up / hidden sub game?
NORTSHIPZ : Get a new ship (At title screen)
ENGAGE :New ship with all weapons
SHIPZONE : Upgrade your ship in 3D
MIX : All of the guns mixed together into one big huge gun

* During play:
[F2]+[F3]+[F6] : Invincible
[F2]+[F6]+[F7] : Skip to the next level.
[Backspace]+[1] : Super Turbo mode
[Tab]+[1] : Switch to the blue ship
[Tab]+[2] : Switch to the red ship
[Tab]+[4] : Switch to a suped up red ship
[Tab]+ 3,5,6,7,8,9, or 0 : Switch to the normal ship with no armor

* At difficulty select:
[Shift]+[G] : Activate difficulty "Impossible"
Next : [}] : Activate difficulty "Suicide"


* In The Setup Program:
[W] : Wild Detail Level (several new detail levels)

* In The JukeBox:
/ -Switch from music mode to sound effects mode
. -Next sound effect
, -Previous sound effect
; -Play sound effect
[ -Decrement star color and pixels
{ -Same as above but different method
] -Increment star color and pixels
} -Same as above but different method
+ or - -Speed up and slow down the speed of the stars and the music
0 -Reset the speed of the stars and the music
1-8 -Star pattern
F -Fade out the music
P -Pause
R -Repeat the song
W -Pulsate the music

* Command Line Parameters:
Start Tyrian by typing FILE0001, <space>, and one of these parameters, and [Enter]:

LOOT [Alt]+[2],[5],[4] : Extra money
BORDER : ???
CONSTANT : Ship constantly fires and sweeps from side to side
DEATH : Ship blows up immediately but the game continues to scroll through the level
NOKEY : No keyboard
NOJOY : No joystick
NOROBERT : ???
RECORD : Records a demo of the current game and saves it as DEMOREC.x
(where "x" is a number in sequential order of the demo i.e. DEMOREC.1, DEMOREC.2, etc...) in the current directory
(How do you play them back without renaming them to DEMO.x and overwriting the existing demo files???!!!)

(Information from Cheat Machine)