go to level one, hold SHIFT and TAB together for 23.56 hours and you go to last level

OK, so this will work for ALL versions of CI 3.

Look UP (NOT press the key UP)
Look DOWN
LOOK LEFT 
Look RIGHT

Turn Around
Turn Left
Turn Right

GET A LIFE!!!!

start chicken invaders 3 start new game get to wave 5 click esc on keyboard quit then
restart computer and go into documents where u saved chicken invaders 3 copy and paste it
somewhere then delete the one you have then cut and paste the other one that u copied then
play!

THIS REALLY WORKS!!!!!! I GOT PASSED LAST LEVEL BECAUSE OF THIS!

While playing the game, press [F9] + [F10] to enable cheat mode. Then, press one of the
following keys to activate the corresponding cheat function:


Result 	Cheat Code
Extra life	[F5]
Extra missile	[F6]
Extra firepower	[F7]
Next wave	[F8]

if you put cheats on, enter your name and you will have 99 extra lives. trust me

Chicken Invaders 3

Cheat Codes:
------------
Update by: herospawn
Update by: ajit khatoi
Submitted by: RM

Press [F9] + [F10] during game play to enable cheat mode. Then, press
one of the following codes.

Result               Code	
-------------------------
Give 250000 points - F3
Extra life         - F5
Extra missile      - F6
Extra firepower    - F7
Next wave          - F8

You have to go to the option tab and then to gameplay. Check the cheats 
on tab. Return to the main menu and start the game, what ever strength 
you like.


Cheat:
------
Submitted by: Brandon

first go to the play area(solar system) when a chicken comes ram it with
ur plane! (this is not a joke!)Do this until all your lives are gone. 
Then go to the play area (solar system)again and you will see that you 
are having 16 lives , 16 missiles and all unlockables will be unlocked!