Tyrian

Invincibility:
Press [F2] + [F3] + [F6] during game play.

Level skip:
Press [F2] + [F6] + [F7] during game play.

Destruction mode:
Press [F2] + [F3] + [F5] during game play. A message will confirm correct code entry. Shields will be reduced to zero after one hit.

Extra money:
Press [F2] + [F3] + [F10] during game play. Note: This code may be enabled in each level.

Christmas mode:
Set the system date to any day in December and load the game.

Super turbo mode:
Press [Backspace] +1 during game play.

Expert mode:
Type engage at the title screen. Note: This may only be enabled in v2.0 and greater.

Easy mode:
Hold [Scroll Lock] and type engage at the title screen. Note: This may only be enabled in v2.0 and greater.

Bonus difficulty levels:
Press G (case-sensitive) during game play to set the difficulty level to "Impossible". Press } while in the "Impossible" level to increase the difficulty to "Suicide"

Switch to story mode:
Press 2 during game play in arcade mode.

Cheat mode:
Enter the following codes at the main menu to activate the corresponding cheat function.

Effect	Code
XQR experimental ship	techno
Elemental ship	stormwind
TX Silvercloud ship	unknown
U-Fighter ship	enemy
Carrot food fighter	wierd
Ninja ship	stealth
New ship	nortshipz
Destructor mini-game	destruct

Note: Press [F1] after enabling the "Destructor mini-game" code for instructions. Enabling the "XQR experimental ship" code will also display the game's opening screen.