Deep Fortress

In Deep Fortress you're an elite helicopter pilot sent into an underground fortress to rescue the captured high command officers and wipe out the terrorist behind it all. The fortress has seven heavily guarded bunkers, and each one holds the shield generators for the next. Destroy every generator, survive the self-destruct explosion and move on, while enemy aircraft, vehicles, guns and security systems do their best to stop you.

Your green attack helicopter flies sideways over detailed rendered mountain landscapes, and the panel at the bottom shows your fuel, shield and ammo, along with your weapons.