Airstrike 3D 3 (Air Assault) is the third game in the series.
It features 2 new guns.
It is more focused on the story, as it starts with a short cut scene. It has a tutorial again so it is more friendly for new players.
This is the only game in which you do not accelerate when being further away from the bottom of the screen.
It has 6 helicopters, but only 18 levels.
Full gameplay by bogroman13:
Levels:
Tutorial - Teaches you the basics of the game. Forest, hills.
Riot Call - Forest factory at night.
Lost Paradise - Plains with rivers and lakes.
Sand Assault - Desert oil refinery.
Blood 'n' Oil - Desert oil refinery at night.
(1. boss) Machine of Hate - A giant tank that can shoot a lot of rockets and red bullets at the same time. There are also 2 helicopters comming out of it every 10 seconds. Your goal is to destroy the tank while also destroying other enemies that can drop useful items. The level is situated in a mountain area.
Gold Isle - Forest with rivers, evening.
Deep Strike - Huge body of water throughout the whole level, rainy weather.
Dark Water - Huge body of water throughout the whole level, snowy weather.
Frozen Fury - Snowy forest.
Flashpoint - Forest with a river, evening.
(2. boss) Flying Beast - Youre in a valley with a river. Youre fighting a huge aircraft with 3 attacks: rockets, blue bullets and 2 motors with fires fuming from its behind. Once both motors are destroyed another smaller aircraft comes out, which is pretty easy to beat.
Treasures of Ancients - Foggy desert with lakes
Close combat - A forest with a big river.
Burning wasteland - Hills, dark ground, evening time, meteorites falling and what seems to be lava lakes, but later in the level we see a boat driving on it, so we assume it is just water but lit up to seem red
Industrial Scar - Hills, dark ground, evening time, lots of industrial buildings
Canyon Crisis - A canyon with a river inside of it
(Final boss) Judgement Day - Youre in a valley with meteorites falling from the sky. First you need to defeat a train with rocket launchers, and then destroy their main base that has a lot of turrets