Airstrike 3D 1 (Operation W.A.T.) came out in 2002.
The first game in this series focuses on the story . It has more helicopters to chose from than the other games.
Sadly it is very rare to see this game work on a Windows 10 PC
Full gameplay by Charlie9631 :
Levels:
Tutorial - 3:36 - Teaches you the basics of the game. Desert terrain with rivers.
Leaving Home - 8:26 - Same terrain.
Desert Strike - 12:28 - Desert at night.
Area 55 - 16:29 - Plains, hills.
Millburg - 20:30 - Plains/forest at night.
(Boss) Fear Factory - 24:30 - First boss of the game. At the end of the level instead of the usual landing pad you have an enemy base you need to defeat to beat the level. The base has 2 turrets. There are also tanks that come out of the base every 10 seconds. Once you destroy 1 turret, multiple rocket launchers start comming out of the base every 20 seconds. Once both turrets are destroyed more multiple rocket launchers start comming out and a big red ball opens up in the center of the base. It does nothing, you just simply have to shoot it until it runs out of health. That is the ultimate goal of the level.
Cold Battle - 34:02 - Snowy forest
Snow Storm - 37:59 - Snowy mountains
Great River - 42:02 - Rainy plains with a big river.
Forest Terror - 46:05 - Plains/forest
Tank City - 50:14 - Small town at night
Oil Tycoon - 54:08 - Desert with an oil refinery
Small Arms Factories - 58:18 - Plains/forest
(Boss 2) Interception - 1:02:21 - The second boss of the game is situated in a snowy hill terrain. It is a giant aircraft that can shoot default guns and rockets straight ahead, and fire that can follow the player. It has a lot of health. There are also other enemies along the way but by destroying them you can get good items to help you out.
N.I.T.O Secret Base - 1:06:29 - Snowy forest
Peatbogs - 1:10:31 - Rainy forest with lots of lakes
The Nuclear Winter - 1:14:38 - Snowy forest in the evening
End is Near - 1:18:59 - Rainy forest with lots of lakes
The BadLands - 1:22:45 - Destroyed terrain with dead trees, dark ground and volcano activity at night.
(Final Boss) N.I.T.O Headquarters - 1:27:10 -Destroyed terrain with dead trees, dark ground and volcano activity at night. The water is replaced with lava (not involved in the gameplay btw). The finals boss is like the first one, but with double the turrets and tanks, and without multiple rocket launchers. Upon defeating the center turrets you beat the game.