“Sci-fi” and “G-rated” are two things that you definitely don’t see in the same sentence too often.
In a genre crawling with carnivorous aliens, epic space battles, mad scientists, gruesome (not to mention ethically questionable) experiments and things with teeth the size of skyscrapers, it’s almost impossible for the MPAA to put most science fiction movies under the microscope without giving them at least a PG rating.
When the Motion Picture Association of America launched its new film-rating system in 1968, it was intended as a guide for parents that would give them an idea which films were appropriate for their children—or at least when to cover their kids’ eyes. While the updated filter replaced the outdated and censorship-prone Motion Picture Production Code, the qualifications for appealing to general audiences (read: all ages) are still strict.
Often, this dreaded "G"" branding was synonymous with good clean entertainment, but that wasn't always the case. Few movies in the vast galaxy of sci-fi have qualified as “nothing that would offend parents for viewing by children.” Flesh-hungry extraterrestrials and paranormal phenomena just weren’t destined for the ultimate family-friendly stamp of approval. While the Kraken may have not been suitable for innocent eyeballs, there were still some tentacles that managed to make it through MPAA filters.
From the terrors of Witch Mountain and Ape City, through the Stargate past V'ger, into Wonka's wacky chocolate factory and onward to the far side of the sun, this treasure trove of 18 live-action features from 1968 and later prove that G-rated sci-fi flicks really do exist. See for yourself!