As can be expected, the films from this time period are in black and white, and many do not even feature sound. However, many people are of the belief that these details add to the scariness since we are not used to them. See for yourself when you watch these classics for free online.

1. A Trip to the Moon : This short film from 1902 involves a group of men traveling to the moon via cannon, being kidnapped by aliens when they reach the surface, but then safely coming back home.
2. Frankenstein : The 1910 version is made creepier than usual due to its lack of color.
3. 20,000 Leagues Under the Sea : Despite today’s advances in cinematography, you will still be impressed with the underwater footage found in this 1916 gem.
4. The Cabinet of Dr. Caligari : When a prediction comes true, resulting in a murder and then an abduction, this silent film from 1919 begins its creepy ride.
5. Dr. Jekyll and Mr. Hyde : You don’t want to miss the 1920 version of this film, which stars the famed John Barrymore.
6. The Golem : Clay has never been scarier or more devious than in this 1920 classic, which stars a clay creature.
7. Nosferatu : Many claim that this 1922 movie is the scariest of all the versions, so be prepared.
8. Wolf Blood : This silent film from 1925 features a man who is hurt so badly that he needs a blood transfusion. The issue is that the only volunteer happens to be a wolf, which gets the man a bad reputation for being a werewolf.
9. The Lost World : Forget the movie of the same title made in the 1990s; this 1925 flick is where it all begins, focusing on a world filled with unique creatures from the prehistoric era.
10. The Phantom of the Opera : You might have seen several remakes of this classic, but the 1925 version is truly unique.
11. The Cat and the Canary : This silent film from 1927 features a wealthy man who dies and leaves his riches to an heir. However, it must be proven that she is sane before she gets the money, which may become increasingly harder for her to do throughout the film.
12. The Fall of the House of Usher : This 1928 French film is dubbed over in English, and is every bit as creepy and macabre as the story by Edgar Allen Poe.

Sci-Fi Movies from the 1930s

Many of the beloved classic sci-fi movies from this era involve dead people coming back to life. Unlike some other time periods, these movies are more focused on ghosts, though some zombies and mad scientists are occasionally thrown in the mix.

13. Svengali : This 1931 film features a master of music who can hypnotize women quite well. When he uses his powers to convince a model that she can sing, their international singing tour is spoiled by her old lover, who was told she was dead.
14. The Monster Walks : A killer ape is the star of this 1932 horror movie, and he has a tendency to stalk victims on stormy evenings.
15. The Most Dangerous Game : The reason for the title of this 1932 flick becomes pretty apparent when a man is discovered to be partaking in a game that involves hunting humans.
16. White Zombie : A man’s wish to elope with a taken woman are spoiled when she is turned into a zombie and controlled by her master for much of this movie, which was made in 1932.
17. The Phantom Express : A train engineer derails his train, killing many people, when he believes he sees another train coming at him on the tracks. This 1932 film is focused on the engineer trying to find the train that no one else seemed to see.
18. The Ghoul : A servant soon realizes he messed with the wrong dead man when a professor rises from the dead to get back a jewel that was stolen from his coffin, by the servant of course. This 1933 movie was once thought to be completely lost, but this is the full version that was later found.
19. The Vampire Bat : If you are already disturbed by bats, particularly the idea of them taking on the shape of a human, this 1933 film might put you over the edge.
20. The Ghost Walks : If you enjoy mysteries infused with a sci-fi feel, you will enjoy this movie, which was made in 1934.
21. The Mysterious Mr. Wong : In this 1934 classic, a reporter is captured by the power-hungry Mr. Wong while trying to find out more about some recent murders.
22. Maniac : This black and white movie from 1934 features not one, but two mad scientists, though one has to kill the other in order to impersonate him properly, of course.
23. The Evil Mind : Many people would be happy if they found that their predictions could become real, but the star of this 1934 movie feels otherwise.
24. The 39 Steps : Alfred Hitchcock is a favorite among many, and this 1935 thriller makes it easy to see why.
25. Things to Come : Movies from the past about the future are often comical since the ideas are typically absurd, but this 1936 film will not have you laughing.
26. The Man Who Changed His Mind : The title does not do justice to this 1936 sci-fi film about a mad scientist.
27. The Devil’s Daughter : This 1939 horror movie manages to incorporate some romance and even some comic relief, despite a family member who has mysteriously disappeared.

Sci-Fi Movies from the 1940s

The majority of these movies are still in black and white, but the occasional color film might surprise you. Many involve an air of mystery and suspense, in which the audience is scared by murderers and ghosts, but determined to figure out who the bad guy is.

28. Space Soldiers Conquer the Universe : This is Chapter 12 of the Flash Gordon series, and was made in 1940.
29. King of the Zombies : This 1941 film stars a devious doctor, some zombies, and the practice of voodoo, so the creepiness factor should be high.
30. The Ghost Train : Like the title suggests, this film from 1941 centers on the possibility of ghosts appearing from a long ago train wreck.
31. Black Dragons : This thriller from 1942 focuses on traitors being picked off one by one by a man who turns out to have surprising reasons for the murders.
32. Phantom Ship : The 1942 masterpiece will get your blood pumping trying to figure out who the murderer is.
33. The Mad Monster : While this movie from 1942 does involve a man who turns into a wolf, it is far from Teen Wolf in style.
34. The Corpse Vanishes : This 1942 classic will give you chills, particularly if you are a young woman.
35. Bowery at Midnight : If you like a good old-fashioned sci-fi film about a man who has three personalities, one of which is a decorated crime boss, you will enjoy this 1942 film.
36. The Monster Maker : This is another mad scientist film, made in 1944, but the unique detail is that it focuses on a malevolent scientist bent on making people incredibly deformed.
37. White Pongo : Scientists in this 1945 flick believe that a strange looking gorilla in the woods could be the missing piece of the puzzle when it comes to figuring out where we originated.
38. Midnight Manhunt : This 1945 film focuses on the discovery of a corpse inside a wax museum, prompting a reporter to find out who the murderer is. He may be closer than the reporter thinks.
39. Angel on My Shoulder : This unique film from 1946 involves a former gangster who is allowed to come back from hell only after he vows to get revenge on his killer by impersonating a judge. However, his moral actions as the judge surprise and dismay the devil.
40. Scared to Death : This 1947 movie, which begins with a woman’s autopsy, is one of the few color films from this time.
41. The Ape : You might think that apes and similar animals are cute until you watch this 1947 horror movie, which stars a creepy man who looks suspiciously like an ape.
42. The Amazing Mr. X : The twisty plot about a widow and a mysterious man will keep you interested in this film from 1948.

Sci-Fi Movies from the 1950s

Many of the films from this decade switch from the 1940s theme of supernatural hauntings to exploration of other worlds. In many of these flicks, aliens arrive on our planet with an unknown purpose, or the protagonists travel to some mysterious world and end up in deep trouble. Occasionally, a seemingly harmless trip to the ocean ends in tragedy, or perhaps an unidentified beast gets loose and terrorizes the world. Either way, these sci-fi movies are usually both terrifying and thought-provoking. Now you can view them for free on various websites.

43. Prehistoric Women : This film from 1950 chronicles a group of cavewomen who apparently no longer need the men who were enslaving them.
44. Bride of the Gorilla : This 1951 might have romantic elements in the beginning, but it ends up a bit bizarre when a gorilla becomes the star of the show.
45. Planet Outlaws : If you like thrillers set in space, you will likely enjoy this 1953 movie that involves two men heading to Saturn.
46. The Snow Creature : In this film from 1954, a strange creature is spotted in the Himalayas and taken back to the United States, where it gets loose in order to terrorize the country, of course.
47. The Beast with a Million Eyes : This 1955 gem features animals gone wild due to a strange beast with—you guessed it—a million eyes.
48. The Phantom from 10,000 Leagues : If you are still afraid of Jaws washing up on the shore, this 1955 sci-fi thriller about a mutant on a murder spree in the ocean will probably not amuse you.
49. Warning from Space : This 1956 film stars a female singer who is actually an alien in disguise attempting to warn humans about an approaching meteor. It’s a good thing she is disguised, because most people would never give her a chance to explain in her natural starfish-like form.50. The Incredible Petrified World : While exploring under the sea, a crew is cut off from the rest of the world, eventually finding several caves and even a person who is also stuck there. This movie was made in 1957.
51. The Screaming Skull : In this 1958 flick, a man and his new wife encounter the angry spirit of his late wife at their home, convincing the woman that she is slowly going crazy.
52. Attack of the Puppet People : If dolls and their makers freak you out a bit, you might want to skip this 1958 creep show unless you enjoy being scared.
53. It! The Terror from Beyond Space : This film from 1958 features people who thought that they were going to explore space, only to instead be discovered and killed by a monstrous creature.
54. The Lost Missile : This 1958 classic features a race against time to dismantle a menacing missile sent to New York City from outer space.
55. The Giant Gila Monster : Some teenagers come across a huge lizard during their travels in this 1959 film.
56. Teenagers from Outer Space : Giant lobsters are about to be raised from their slumber by aliens in this 1959 movie, until one of the aliens discovers that human lives are at stake.
57. Terror is a Man : In most cases, turning an animal into something resembling a human is not only difficult, but ill-advised, as you will find out in this 1959 sci-fi film.

Sci-Fi Movies from the 1960s

The assortment of movies available online from this time period is quite eclectic. They range from experiments and inventions gone horribly wrong to sinister visitors from another planet. Of course, the occasional zombie or vampire is thrown in the mix, as well. Clearly, there is a sci-fi classic from the 1960s to fit everyone’s tastes.

58. The Wasp Woman : After watching this movie, which was made in 1960, you will know not to trust a beautiful woman who seems too good to be true.
59. Atom Age Vampire : This 1960 feature film stars a reptile who just happens to be a professor with a cure for bad scars. You don’t want to know where this cure came from, but the title provides a good hint.
60. Bloodlust : If tales of people gone awry creep you out, this 1961 flick that features a human-hunting man may do the trick.
61. Master of the World : This film, made in 1961, takes place in 1848 when an inventor wishes to stop war using his flying aircraft.
62. The Phantom Planet : Space travel can be scary on its own, but add being shrunk down to a tiny size, and you have the plot from this 1961 movie.
63. The Brain That Wouldn’t Die : This movie is based in science that is quite advanced for 1962, but becomes creepy fast.
64. Carnival of Souls : This interesting movie from 1962 will get you thinking about life and death.
65. The Crawling Hand : Find out what happens in this 1963 movie when a random hand is discovered.
66. The Raven : This movie from 1963 features sorcerers, a castle, and of course, a raven.
67. The Last Man on Earth : The concept has been seen several times in recent years, but this 1964 take on life in a world after an apocalypse is worth watching.
68. Pajama Party : This sci-fi movie is not very creepy until you realize that one man is actually an alien pretending to be human at a pool party that takes place in 1964.
69. Dr. Who and the Daleks : If you are a fan of Dr. Who, you should find out what happens to him and his family in this 1965 classic.
70. Gammera the Invincible : If you want a twist on Godzilla, and a reason to hate turtles, check out this film from 1966.
71. They Came from Beyond Space : Like many sci-fi movies in this time period, this 1967 film features sinister aliens.
72. Night of the Living Dead : This 1968 classic is both creepy and unforgettable.

Sci-Fi Movies from the 1970s

Films from the 1970s tend to focus on the horror of discovering strange creatures and giant animals that we never knew existed in our time. Unfortunately, most of them turn out not to be very friendly, infusing many of the sci-fi flicks in this time period with a sense of terror. If large insects and prehistoric animals give you nightmares, you might want to steer clear of the following movies that are available online.

73. Horror of the Blood Monsters : According to this 1970 film, you don’t have to travel through time to discover prehistoric animals, and you don’t have to be dreaming to encounter vampires.
74. Lady Frankenstein : This color film from 1971 is perfect for you if you loved the original Frankenstein story.
75. The Incredible 2-Headed Transplant : As the title indicates, this 1971 film involves a monster with two heads, with the added bonus of a mad scientist to thicken the plot.
76. Frogs : In this movie from 1972, a wealthy elderly man lives on an island that turns out to be filled with frogs and other creatures that are not happy with him.
77. Werewolf of Washington : This 1973 film involves the classic plot of a person being bitten, turned into a werewolf, and then getting a job in politics. Well, maybe the last detail makes it unique.
78. Horror Express : Science and zombies come together as the focal points of this 1974 film.
79. The Land That Time Forgot : Some travelers from 1975 lose track of time completely when they find themselves in an area that is run by prehistoric animals and cavemen.
80. Giant Spider Invasion : If you hate creepy crawlers, this 1975 film about 15-foot spiders will give you chills.
81. At the Earth’s Core : Not surprisingly, this film, which was made in 1976, involves a trip to the center of the plant. There’s no telling what kind of creatures will pop up here.
82. The Food of the Gods : This 1976 film focuses on a Canadian island that is home to tons of giant animals who threaten the safety of the visiting humans.
83. Empire of the Ants : This 1977 film features swamp ants as its main stars.
84. The People That Time Forgot : In this 1977 film, cavemen and ancient creatures are the main focal points.
85. The Island of Dr. Moreau : If you have ever considered the consequences of creating a half-human, half-animal, watch this 1977 film to find out what they are.

Sci-Fi Movies from the 1980s

Most of the movies from the 1980s that are available for free online depict a bit of curiosity regarding space. Some movies show aliens as friendly creatures who just need some help, whereas others are a bit more vengeful and only want to harm humans. Of course, there are also films in this time period that deal with the standard werewolves, ghosts, and creepy visions. Fortunately, you get to choose which ones to watch for free online.

86. The Fog : This movie from 1980 will have you terrified of fog, as angry spirits terrorize a tiny town by covering it with a thick mist.
87. The Hand : A man loses his hand during a car accident in this 1981 film, only for it to begin following him around, getting revenge on anyone who the man gets angry with.
88. The Howling : Not surprisingly, this movie from 1981 centers on problems with a murderous werewolf.
89. E.T. The Extra-Terrestrial : Who could forget this 1982 classic about a homesick alien who is stuck on Earth with only one friend: a young boy who tries to help him get home?
90. Poltergeist : This is another unforgettable gem from 1982, centering on a group of ghosts that takes an interest in freaking out a family and then taking their young daughter from them.
91. Blood Tide : This 1982 film focuses on a man who seeks treasure on an island, but instead discovers a monster.
92. The Brother from Another Planet : This classic from 1984 involves an alien who somehow escaped the grasp of some bounty hunters from outer space and ended up in New York. However, he must continue to evade them while on planet Earth.
93. 2010: The Year We Make Contact : This is the 1984 sequel to the film 2001: A Space Odyssey, and it focuses on a trip to Jupiter. Like many classic movies, you might be intrigued and amused by the depiction of the future.
94. Galaxy Invader : This film from 1985 revolves around the age old struggle of whether to hunt down an alien or become his friend.
95. Creature : If you are interested in space, or at least the way it is portrayed in 1985, you will enjoy this movie, which involves a vindictive alien on a moon of Saturn’s.
96. From Beyond : In this movie from 1986, a doctor faces some consequences when he realizes that the citizens of a little-known realm can see him just as clearly as he can see them.
97. The Toxic Avenger : Find out what a boy covered in toxic waste turns into in this bizarre film from 1986.
98. Robot Holocaust : This movie from 1987 mixes a vision of the future with the existence of robots, who are in charge after a devastating holocaust.
99. Bloody Wednesday : A man begins to go crazy, seeing visions and finally meeting a nasty end while he goes through a divorce in this 1987 film.
100. Timestalkers : If you enjoy the idea of time travel, and are interested in the vision of the 26th century as depicted in this film from 1987, you can check out this movie for free online.