Earth vs. Flying Saucers

Publisher's blurb The Earth is in a panic! Saucers are coming to open a new Peopleburger franchise! Can you stop them? Two levels of difficulty. This one is simpler to play than [most games], with only one button to push. But it's still quite a good challenge. Will run in 8K on any OSI C1, C2 or C4 tape based computer. Recorded twice on each tape; covered by a limited replacement warranty, return for replacement. User summary Programmed by Bob Retelle.