1. The Monster and the Ape
A famous scientist invents a humanoid robot , so a greedy rival scientist plans to steal it for use in his criminal plans. His henchmen often kidnap a trained gorilla from the zoo, to aid in the schemes.
It has an average vote of 6.3 on TMDB.
2. Flash Gordon
Disaster seems imminent when scientists discover that the planet Mongo is about to crash into Earth. Luckily, heroic young Flash Gordon is on hand to lead an investigative mission into outer space and onto the speedily approaching planet. There, he and his best girl, Dale, who is along for the ride, learn that Ming, the devious ruler of Mongo, has purposely put the planet on a collision course with Earth, and only Flash can stop him.
It has an average vote of 6.313 on TMDB.
3. The Adventures of Tarzan
Tarzan spurns the love of La, Queen of Opar. When he isn't trying to keep the Bolshevik Rokoff and Clayton from reaching Opar, he is attacked simultaneously by two lions, dropped into a pit when a volcano splits the ground, nearly sacrificed by sun worshipers, and so on.
It has an average vote of 5.8 on TMDB.
4. The Secret Code
A superhero known as The Black Commando battles Nazi agents who use explosive gases and artificial lightning to sabotage the war effort.
It has an average vote of 4.8 on TMDB.
5. The Royal Mounted Rides Again
In time-honored fashion, a couple of supporting players -- George Dolenz and Bill Kennedy -- found themselves elevated to starring roles in this minor Universal serial. They played Royal Canadian Mounted Police officers investigating the murder of a miner. The story, of course, was less important than speed and action, which directors Ray Taylor and Lewis D. Collins delivered in typical slap-dash Universal style. Starlet Daun Kennedy did not make much of an impression as the imperiled leading lady, and former star Robert Armstrong was wasted in a subordinate role. Rondo Hatton, a non-actor whose grotesque appearance was tastelessly exploited by Universal in the '40s, appeared as one of the outlaws.
It has an average vote of 5.8 on TMDB.
6. Drums of Fu Manchu
The nefarious Dr. Fu Manchu searches for the keys to the tomb of Genghis Khan, in order to fulfill a prophecy that will enable him to conquer the world. His nemesi, Dr. Nayland Smith and his associates fight to keep the evil doctor from getting his hands on the keys. In 1943 the serial was edited together into a feature movie also called Drums of Fu Manchu.
It has an average vote of 6.1 on TMDB.
7. The Crimson Ghost
A criminal mastermind known as The Crimson Ghost is out to steal a device called the Cyclotrode, which can short-circuit all electrical current on the planet.
It has an average vote of 4.8 on TMDB.
8. Bride 13
A gang of Tripolitan pirates swooped down and kidnapped 13 wealthy brides, whom they held for ransom.
9. The Hope Diamond Mystery
The true story of Lord Francis Hope who inherits the Hope Diamond and marries showgirl May Yohe. Lord Francis Hope gambles away the family fortune and May Yohe leaves him. Another suspected curse of owning the Hope Diamond.
10. Hurricane Hutch
Story concerns a paper mill, a mortgage and the struggle to obtain the lost formula for making paper from seaweed. Star is given opportunity to introduce many daredevil features.
It has an average vote of 6 on TMDB.
11. Jungle Girl
Dr. John Meredith has been driven from civilization by the criminal activities of his twin brother Bradley Meredith. With his infant daughter, he settles in the African jungle, where his ability to cure the native ills has resulted in his virtual control of the Masamba tribes, who possess vast diamond mines coveted by a gang of crooks.
It has an average vote of 6.2 on TMDB.
12. The Secret of Treasure Island
A variety of people are searching for a long-hidden treasure somewhere on an island. Chapters: 1. The Isle of Fear, 2. The Ghost Talks, 3. The Phantom Duel, 4. Buried Alive, 5. The Girl Who Vanished, 6. Trapped by the Flood, 7. The Cannon Roars, 8. The Circle of Death, 9. The Pirate's Revenge, 10. The Crash, 11. Dynamite, 12. The Bridge of Doom, 13. The Mad Flight, 14. The Jaws of Destruction, 15. Justice
It has an average vote of 4 on TMDB.
13. Jungle Jim
Two safaris enter the African jungle intent on finding a white girl who is the heiress to a fortune. One safari, led by Jungle Jim, wants to make sure she gets the news that she is now a rich woman. The leaders of the other safari want to kill the girl so they can try to get hold of her inheritance.
It has an average vote of 4.8 on TMDB.
14. Perils of Nyoka
Professor Campbell's expedition into the hills of Libya obtains a papyrus which might reveal the hiding place of the Golden Tablets of Hippocrates, containing lost medical secrets. Also in the region is intrepid Nyoka Gordon, still seeking her father, lost on a previous expedition. She alone can translate the papyrus, which directs our heroes through deadly perils into the land of the Tuaregs. Opposing them are Vultura, Queen of the Desert, and her Arab ally Cassib, both greedy for the treasure...
15. Red Barry
A police detective is caught up in a plot to steal two million dollars in bonds.
16. Federal Operator 99
Jerry Blake teams-up with Joyce Kingston to thwart the plans of escaped crime boss Jim Belmont.
It has an average vote of 6 on TMDB.
17. Hawk of the Wilderness
An expedition arrives on an uncharted jungle island to rescue the local natives, led by a jungle boy, from a volcano that is about to erupt.
It has an average vote of 7 on TMDB.
18. Daredevils of the Red Circle
Escaped Prisoner 39013 impersonates the rich and influential Horace Granville, allowing him to create a variety of disasters. Fortunately, he is thwarted repeatedly by three daring circus daredevils.
It has an average vote of 5.5 on TMDB.
19. King of the Rocket Men
Prof. Millard pretends to be dead and helps Jeff King ferret out Vulcan, the evil traitor at the science academy. Donning his Rocket Man costume King goes from one hair raising rescue to the next in order to keep the newly invented Decimator out of the clutches of Vulcan and his minions.
It has an average vote of 5 on TMDB.
20. Spy Smasher
Prior to the United States' involvement in World War II, the masked vigilante Spy Smasher fights Nazi agents operating within the US, led by the treacherous sabotage leader codenamed The Mask.
It has an average vote of 5.8 on TMDB.