A to Z Cheats

Alien 3

Cheat mode
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Press A, B, Y, X on controller two during game play. 
Press A on controller one to display a cheat number in 
the top left corner of the screen. To change the cheat 
number, press A on controller two to toggle invincibility, 
B on controller two to toggle no damage, or C on controller 
two to toggle unlimited weapons. The cheat number corresponds 
to the following status: 

1 - Invincibility
2 - No damage
3 - Invincibility
4 - Unlimited weapons
5 - Unlimited weapons and invincibility
6 - Unlimited weapons and no damage
7 - All cheats activated 

Level skip
----------
Press C, Up, Right, Down, Left, A, Right, Down on controller 
two at the options menu. A sound will confirm correct code entry. 
Pause game play and press C, A, B or C + A + B. A green flame 
around the screen will confirm correct code entry. Resume game 
play to advance to the next level. 

Level Password 
-------------- 
2 QUESTION  
3 MASTERED  
4 MOTORWAY  
5 CABINETS  
6 SQUIRREL  
End OVERGAME  

Alien movement
--------------
There are some places where the aliens will not follow you or enter.

Weapons
-------
Use your weapons wisely. When you are out of ammunition, you cannot 
use fists or hit the aliens with your guns.