Contra III: The Alien Wars cheats and cheat codes for Nintendo Wii

This game another title is Contra spirit.

View Hidden Ending:
Finish the Game on the Hard mode to view a secret ending.

Unlimited lives (maximum 29):
Note: Use a turbo controller to speed up the process. The following trick
works only if you have the machine gun as your weapon.

Fight on level 3 until you reach "The Flying Squito Nest" mini boss
(boss after you climb the building). Go with your character as far to the
left of the screen as you can and have him facing the right. Tape down the
Y button and TURN ON your turbo mode. Set your controller down and come back
in a few minutes later. You will get lot of lives, but 29 is the maximum.