I saw this movie on the Saturday night "Sci-Fi Movie" when I was a kid in the mid to late 60s. It scared me then. I had to find a copy and watch it again almost 40 years later. Upon this second viewing, the part that scared me the most is that there may have been people who took this seriously! I can't believe grown men (OK people for the PC world we now live in) could actually invest time and money on a project like this but I'm glad they did because I must admit that I am a fan of "bad horror movies." They don't get much worse than this so of course I enjoyed it. As another reviewer pointed out, there is almost no acting. Also, there isn't much of a plot, the special effects are terrible, if not, non-existent. All of which adds up to one of the best bad horror movies I've ever seen. Very entertaining in that regard.