Despite a slow first half, "Snow Devils" is fun escapist fare. An intrepid team of spacemen/scientists led by wavy-haired Rod Jackson (Giacomo Rossi ('Jack') Stuart) travel to the Himalaya to investigate climate change (very prescient). As modern "climate-change deniers" claim, it is not due to human activity but is rather due (this they do not claim) to aliens who are modifying our climate to match their needs as they plan on colonising Earth. The aliens are somewhat greenish hairy men with very fake-looking huge hairy Hobbit feet, who are the basis of 'yeti' sightings (or "snow devils" to the locals). There is a lot of tedious trudging through snow and cave-sets before this is established, at which point the movie gets interesting as the team blasts off to the moons of Jupitar to attack the alien base. Typical of director Antonio Margheriti's so-called "Gamma One" series (named after the space station that appears in all of the films), "Snow Devils" is full of great, if not particularly realistic, looking miniatures (including lots of spaceships) and imaginative scenes of people floating in zero-gravity. In a surprising nod to scientific accuracy (in a film where the rockets all gout flames as they fly through space), the issue of time delay in radio communications is written into the plot. The acting is generally hammy (Stuart delivers some lines in a Shatneresque staccato) and the women are primarily decorative (but look nice in their tight-fitting space-pants). If you have seen other "Gamma One" films, expect some feelings of déjà vu, as the props are recycled (note the reappearance of the futuristic cars similar to George Jetson's (although not capable of flight)). Not exactly cerebral sci-fi but better than most Hollywood offerings of the same vintage and budget. Worth watching by anyone looking for an imaginative, colourful and mindless time-killer, but a must-see for fans of science fiction movies.