Task Force Harrier EX

Press C + Start. Note: This may not work in later versions of the game.

Hold A and power on the Genesis. Release A and press Up, Down, Left, Right, A, B, A, C, B at the title screen. Two additional options will appear on the configuration screen. Enable "Muteki" for invincibility. Use the "Window" option to adjust the screen size.

When the title screen appears, press: Up, Down, Left, Right, A, B, A, C, B. Now, go into the options and you'll be able to select the starting stage, invincibility and screen type. Additionally, you can do the following actions while playing:

Enable the "Cheat mode" code, then hold Start and press A during game play to advance to the next level.

Pause game play and rapidly tap B.

Press C(3) at the title screen.

At the title screen, press C, C, C. No confirmation is shown or heard.

Press A, B, A, B, C at the title screen.

At the title screen, press A, B, A, B, C. No confirmation is shown or heard.