From Sega Retro
Aerial Assault (エアリアル アサルト) is a shoot-'em-up game developed by Sanritsu and published by Sega for the Sega Master System and Sega Game Gear in 1990 and 1992, respectively. The working title for the game was Freedom Fighter, and was referred to as such in several magazine reviews.
Players control a prototype fighter plance codenamed "Freedom Fighter" (hence the working title) which looks like an F-15. (In game model looks like a Delta-wing plane however, like Mirage) Ultimate goal of the game is to defeat the terrorist organization named N.A.C. (meaning of this acronym was never explained even in the manual) which somehow managed to gather enough resources and technology to start a war against the entire world. Player is tasked with the destruction of N.A.C.'s secret weapon, a giant laser cannon called "EL" which can destroy the ozone layer. It has been hinted that N.A.C. is actually an alien civilization.
Gameplay (Master System Version)
A typical shoot'em up (Or "Shoot'em Right") game, Aerial Assault has simple mechanics. Players must shoot down enemies as game screen scrolls towards the right. Every stage has different type of enemies and bosses which will force players to use different kind of tactics in each level. Game contains 5 levels. (4 if you play in Easy)
Freedom Fighter can be destroyed if hit by enemy, projectiles or touches any stationary object, such as ground. There are not "hit points" but a "Shield" power-up which appears in later levels can save the players a few times until it is gone.
Controls are also easy. Number 1 fires the main weapons while number 2 fire special weapons.
Mission 1 Attack the enemy's open seas fleet and sink the enemy battleship "Vinsk"
Mission 2 Ascend into the stratosphere and intercept the enemy bomber fleet. Target is massive bomber CB-53.
Mission 3 Location of N.A.C.'s headquarters detected. Destroy the cliff fortress to gain entrance.
Mission 4 Raid the N.A.C.'s headquarters and destroy "EL".
Mission 5 War is not over. Fly into Earth orbit and destroy N.A.C.'s space cruiser and the threat once and for all.
Aerial Assault contains many power-ups.
Master System Version
Game Gear Version