Pearl Harbor: Zero Hour (PC)

Three Planes and Bonus Mission
After you complete level ten, go to the mission select screen, look to the right of the screen, and there will be a tiny airplane. Click on it and there will be a sound to confirm the code. Now you have access to three new aircraft, including the U.F.O., the F-22 Raptor, and the Kikka, a Japenese plane. You will also be able to unlock mission 11, a bonus mission.


Unlock Extras
In the mission selection screen, click on the little black shadow that looks like a plane on the right part of the screen to unlock 3 special planes and 1 special level.