Galaga
Platform: MSX
Region: Japan
Media: Cartridge
Controller: Keyboard
Genre: Shoot 'em Up > Fixed 
Gametype: Undefined
Release Year: 1984
Developer: Namco
Publisher: Namco
Players: 1
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Galaga is a vertical arcade shooter from Namco.  You control a space fighter at the bottom of the screen, scrolling left and right in order to avoid oncoming bombs and kamikaze attacks from alien invaders--and to fire your own missiles to fight back!

There are an infinite number of stages to progress through.  Every third level is a &quot;challenge stage&quot; in which you have a free chance to shoot as many aliens as possible and rack up bonus points.

Certain aliens have tractor beams they can use to capture one of your ships.  If that wasn't your last &quot;life,&quot; you can try to shoot that alien down and recapture your ship, giving you two ships at once and doubling your firepower.

A summary screen appears when the game is over, giving you both your final score and you final &quot;hit ratio&quot;--the number of missiles fired, enemies destroyed, and the percentage of targets hit.
 
http://www.mobygames.com/game/msx/galaga