Galaxy Invaders, as you can imagine, was based on the popular arcade game Space Invaders. It was a yellow-coloured, narrow console with a big square red "firing" botton on the right and a metallic silver joy-stick on the left. It was battery-operated and the idea was to destroy the invading aliens before they reached ground level. You also got extra points for shooting down a UFO! It had three levels of competency. The graphics and the sound effects were all very basic, with an annoying buzzing noise for the UFO! I remember Galaxy Invaders was best played in the dark, as then one could appreciate the illuminated graphics more.