From the Start-Programs menu, select "MS-DOS Prompt". A DOSshell window will appear. Change to the Tyrian 2000 folder. Type "file0001 yesxmas" and press the 'Y' key when prompted. Certain items, weapons, ships and sound effects will be changed to reflect the holiday spirit. The Christmas mode is date-activated and will only be available until December 31, 1999.
Access Secret Ships
Secret ships press tab+1 or tab+2 during the game.
Skip Level
Press F3, F6 and F7 during the game.
All Super Arcade Modes
The Experimental PQZ ship: Type 'TECHNO' at the Tyrian 2000 main menu.
TX Silvercloud: Type 'UNKNOWN' at the Tyrian 2000 main menu.
Stormwind - The Elemental: Type 'STORMWIND' at the Tyrian 2000 main menu.
Ninja Star: Type 'STEALTH' at the Tyrian 2000 main menu.
Foodship Nine: Type 'WEIRD' at the Tyrian 2000 main menu.
Dragon: Type 'LIZARD' at the Tyrian 2000 main menu.
Captured U-fighter: Type 'ENEMY' at the Tyrian 2000 main menu.
Pretzel Pete Truck: Type 'PRETZEL' at the Tyrian 2000 main menu.
Nort-Ship Z: Type 'NORTSHIPZ' at the Tyrian 2000 main menu.
Hidden difficulties
On the difficulty selection menu, press 'SHIFT' and 'G' together to open the Impossible setting. After entering the code for Impossible setting on the difficulty selection menu, press 'SHIFT' and ']' to open Suicide setting.
Super Tyrian mode
At the Tyrian 2000 main menu, type 'ENGAGE' for Super Tyrian mode Lord of the Game difficulty. For Super Tyrian mode on Suicide difficulty, hold the Scroll Lock key and type 'ENGAGE' at the Tyrian 2000 main menu.
Debug mode
During a level, press 'BACKSPACE' and 'F10' to enter/exit debug mode.
Invulnerability
During a level, press 'F2' + 'F3' + 'F6' together. If the message "Cheaters always prosper" appears, you've entered the code correctly. You can lose all of your armor, but you will not die until you deactivate the code (by pushing 'F2' + 'F3' + 'F6' together again).
Random Color Change
During a level, press 'BACKSPACE' and '-' to randomly change the board's color scheme.
Random Song
During a level, press 'BACKSPACE' and 'SCROLL LOCK' to randomly change the background music.
Destruct Mini-game
Type 'DESTRUCT' at the Tyrian 2000 main menu to access the Destruct mini-game.
There are five modes to play:
Outgunned (green troops outnumbered by opponent's units)
Traditional (one on one battle)
Heli Assault (4 helicopters vs 8 ground units)
5-Card War (5 units vs 5 units)
Heli Defense (8 ground units vs 4 helicopters)
Instantly end level
During any level, press 'F2' + 'F6' + 'F7' to instantly warp off of the level. Please note that this will not work with any Super Arcade ship nor will it work in Super Tyrian mode.
Pause Special
During a game, press 'Backspace' and 'Number Lock' together. After doing this, you will not see the word "Pause" on the screen when you pause the game (by pressing 'P').
Wild Detail mode
Run the Tyrian 2000 setup program. Highlight "Game Detail" and press the 'W' key.