Human validation
1 player
Alien
Arcade
Flash
Flying
Shoot 'Em Up
Side Scrolling
Spaceship
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Defender of the Base
Desktop Only
Space Inferno
Space Ripper
Fixed Point In Space
Ex-Terra
Earth Defender Html5
Superfighters
Air Fighter
Bricks Smasher
Galaga
Jimmy Bubblegum
Steam Droid
Bio Tank
Super Villainy
Battalion Commander
Click Battle Madness
Z-Type
Stardust Crusader