Analysis of information sources in references of the Wikipedia article "Galaxian" in English language version.
Examination of the graphics of 10 video machines, selected from the list of the 20 most popular videos for 1980 as published by Play Meter, supported our initial observations. (...) The three most popular video games for 1980 were Asteroids, Galaxian, and Space Invaders in that order. All three video games involve shooting electronic projectiles at rocks in space or at alien invaders.
Entex Galaxian 2, based on Bally/Midway's Galaxian arcade game.