Zombie Nation Cheats (Nes)

When low on energy, press Start to pause the game, then press Up, Up, Down, Down, Left,
Right, Left, Right, B and A. Then press Start to unpause the game, and your energy meter
will be filled. You can do this once per game.

While holding Up, A and B, press Reset on the Control Deck. A screen will appear showing
the sound selections in the game. Now you can press Up or Down to select a sound and B to
hear it.