Five individuals from five nations, including the USA, USSR, and China, suddenly find themselves on an alien saucer, where an alien gives each a container holding three capsules. The alien explains that no power on earth can open a given container except a mental command from the person to whom it is given, then anyone may take a capsule and, by speaking a latitude and longitude at it, cause instant death to all within a given radius: thus each of the five has been provided with the power of life and death. Then, they are given 27 days to decide whether to use the capsules, and returned to the places from which each one came...
Aliens equipped with venomous claws invade a small town, but the town's teenage population is mobilized to fight the menace.
Captain Rameses and his Legion of the Winged Serpent brigade are out to claim Earth for their dying race. Out to save Earth is an alien guard patrol located in the Bermuda Triangle, the League of Races. LOR leaders warn Rameses that he's breaking galactic treaty rules. The alien villain responds by launching an invasion which telepathically drives Earthlings to suicide. The LOR implore UFO expert Professor Duncan to help them. Eventually, the two alien forces battle. Will the Earth be saved?
A young alien falls for a pretty teenage Earth girl and they team up to try to stop the plans of his invading cohorts, who intend to use Earth as a food-breeding ground for giant lobsters from their planet.
Ships disappear on route across the Arctic Sea, and a special submarine is sent to investigate.
The CIA sends playboy Mike Trent to Alaska with agent Vee Langley, posing as his "nurse," to investigate flying saucer sightings. At first, installed in a hunting lodge, the two play in the wilderness. But then they sight a saucer. Investigating, our heroes clash with an inept gang of Soviet spies, also after the saucer secret.
In Japan, scientifically advanced invaders from the war-destroyed planet Mysteroid cause an entire village to vanish, then send a giant robot out to storm the city by night, after which they request a small patch of land on Earth and the right to marry earthling women, claiming to be pacifists. Mankind must decide whether to capitulate or to resist.
A flying saucer hidden in a Red Chinese peasant village is sought by teams from the United States and U.S.S.R. On finding it, they band together to explore the saucer and take a trip into space.
After a UFO sighting, a mysterious phantom in a bizarre outfit starts attacking people in San Fernando Valley.
Eight people at a remote Scottish inn find themselves confronted by a woman from Mars, who has landed her flying saucer for repairs but intends to soon conquer the Earth and enslave its men for breeding purposes.
The existence of mankind hangs in the balance as two warring factions of aliens do battle in Mark of the Astro Zombies. The film begins with an invasion of Earth by aliens who plan to turn human beings into zombies. They gather high-level government officials and attempt to get from them certain knowledge and information they will need. A kind race of aliens lands on Earth and decides to try and stop the evil ones from succeeding with their plans.
Sheldon Bart (Fred Ward) is a drifter, and a small-time con man. He meets his old friend, Brother Bud (Harry Dean Stanton), a big-time con man into faith healing and fencing stolen cars, at his revival tent outside a small town. While he's helping Brother Bud, he falls in love with Arlene (Cindy Williams), a local supermarket clerk who believes in UFOs and is deeply religious and deeply lonely. When Arlene has a vision of a coming UFO, everyone deals with it in their own way.
A civilian oil rig crew is recruited to conduct a search and rescue effort when a nuclear submarine mysteriously sinks. One diver soon finds himself on a spectacular odyssey 25,000 feet below the ocean's surface where he confronts a mysterious force that has the power to change the world or destroy it.
An alien is left behind on Earth and saved by the 10-year-old Elliott who decides to keep him hidden in his home. While a task force hunts for the extra-terrestrial, Elliott, his brother, and his little sister Gertie form an emotional bond with their new friend, and try to help him find his way home.
After a police chase with an otherworldly being, a New York City cop is recruited as an agent in a top-secret organization established to monitor and police alien activity on Earth: the Men in Black. Agent K and new recruit Agent J find themselves in the middle of a deadly plot by an intergalactic terrorist who has arrived on Earth to assassinate two ambassadors from opposing galaxies.
Two buddy farmers are visited by aliens who like their domestic cabbage soup.
A boy tries to stop aliens that have taken over his town and are brainwashing its inhabitants.
In the last moments of World War II, a secret Nazi space program evaded destruction by fleeing to the Dark Side of the Moon. During 70 years of utter secrecy, the Nazis construct a gigantic space fortress with a massive armada of flying saucers.
Scientists and US Air Force officials fend off a blood-thirsty alien organism while investigating at a remote arctic outpost.
Susan Ivanova discovers a derelict spaceship in hyperspace. They tow it back to Babylon 5, then strange things start happening. People are being telepathically taken over by aliens from another (third)space.