CGL Galaxy Twinvader (1981, VFD, 4 C Batteries, Model# 3210)
Game play similar to Space Invaders, but instead of the aliens shooting at you, they just fly straight down at you and you have to avoid them. You can't shoot them once they start flying down. Holding down the Demo button while turning the game on or pressing reset, the game will run through a display test and a demo will start. Check out the Guts section to see the inside of this game.
Different style: