Infiltrator

Infiltrator is a combination of first-person helicopter simulator and
isometric third-person espionage action. You, as Johnny McGibbitts, ace pilot
and neurosurgeon, were given a mission against the “Mad Leader”. You have to
fly in a helicopter behind enemy lines and make a diversion there. You can
fool the choppers into believing that you are one of the bad guys, and also
you can show false documents to guards in the enemy camp. If they aren’t
fooled then you can use a spray of sleeping gas or even a grenade. There are
many houses in the camp, which have many rooms containing useful items, but
you won’t be able to get them all because of the time limit for the operation.