Well, about the time Space Invaders - er - landed - there WAS a game called Moon Landing, wich I remember vividly, as I kept crashing and leaving large craters in the Moon's surface! But this was a pub-machine, with a green and black screen, and simple graphics, and you controlled it by levers. The only sound-effect was when you crashed (loud - so the whole pub knew!

). Maybe the one you're thinking of was an earlier version, before they designed it for non-maths/sceintific types, without the need to calcuate!