A college nerd (Billy Jacoby) learns his biology teacher (Judy Landers) is an alien who needs him for a breeding experiment.

A young extraterrestrial, separated from its family and stranded on Earth, finds friendship with a boy in a wheelchair.

Marilyn Fryser, a land developer, takes a few clients to see an estate with the intention of duping them. However, her plan is interrupted by a colony of giant ants who feed on human blood.

While traveling across a barren landscape, caveman Yor (Reb Brown) arrives at a village in time to save the people from a dinosaur attack. During a feast held in his honor, Yor manages to rescue beautiful Ka-Laa (Corinne Clery) and her guardian, Pag (Alan Collins), from a raid by a hostile neighboring tribe. After being told about another woman who wears the same mysterious medallion he has always had, Yor and his new companions set out to find her and learn about his destiny.

A high-tech soldier (Barry Bostwick) with a flying motorcycle leads troops to the rescue of a ruler (Persis Khambatta) and her people.

Captain Patterson and his crew, accidently land on Venus and are captured by a cruel Queen, Yllana. The noble women on the planet and the astronauts conspire to overthrow the Queen. Will they succeed?

When Akir, a peaceful planet, is attacked by a warlord, Sador, and his army of mutants, Shad, a young Akira farmer, recruits a group of mercenaries to protect his planet.

When her husband, Bill, begins to behave oddly after a year of marriage, Marge decides to investigate, only to discover that he is an alien.

In the 21st century, aliens invade the solar system. Using Mars as their base, they steal all of Earth's space stations then brainwash or kill the crews.

Landed on the moon, Capt. John Anderson (Ken Clark) and his fellow astronauts quickly find their mission threatened -- first by the disappearance of two team members, then by a troubling interaction with aliens who appear to be living within the moon itself. The aliens have weapons that could plunge parts of Earth into another ice age, and they're aiming for the United States. Most of the astronauts are bent on saving the nation, but the international makeup of the team is a complicating factor...

Dr. Richard Stanton (William Lundigan) and Dr. Jerry Lockwood (Richard Carlson) are two daring young scientists who put their lives on the line to explore the universe. Seeking to discover a metal better suited to space travel, these pioneers launch into outer space to retrieve a meteorite. But, after fellow astronaut Walter Gordon (Robert Karnes) is violently killed when attempting to wrangle an enormous meteor, Lockwood panics, leaving Stanton to complete the mission on his own.

A scientist allows his young son to repair a robot, which comes under the control of an alien force.

An alien from a dying planet brings five average people from England, Germany, China, the Soviet Union and the United States onto its spacecraft. Each person is given a case containing vials that can destroy all life within a 3000-mile radius. They're told that the Earth will be spared complete destruction if all five can keep their respective governments from using the capsules for 27 days, but escalating Cold War tensions between the Americans and the Russians make that a difficult promise.

A violent conflict erupts between cave-dwelling tribes when twin brothers fight for chieftainship and the affections of a beautiful woman.

A professor and his colleagues follow an explorer's trail down an extinct Icelandic volcano to the Earth's centre. However, they face many challenges in their quest.

A group of explorers are pulled to the bottom of the sea after their ship is attacked. They then discover the lost city of Atlantis, which is inhabited by creatures from another planet.

An ageless submarine captain (Joseph Cotten) ferries three explorers to an underwater colony threatened by a villain (Cesar Romero).