1. Home
  2. Movies

List of Sci-fi Movies starting with O

List of Sci-fi movies starting with letter O - Sci-fi Movies List

Click the movies below to see that films' synopsis, plot, cast/actors, directors, full poster, movie trailer, and review.

Table of ContentsPopular Sci-fi Movies that start with OTop Rated Sci-fi Movies that start with OAll Sci-fi Movies that start with OAll Horror Movies that start with OAll Fantasy Movies that start with OAll Thriller Movies that start with O

Most Popular Sci-fi Movies that Start with O

10). Occupation (2018) (Movie Info + Poster + Trailer)

Occupation poster
Score: 4.67/10 | IMDB Rating: 4.5/10 | IMDB Votes: 17,811 | Rotten Tomatoes: 5.0/10 | Metascore: 4.5/10 | MPAA Rating: R
Plot / Synopsis: A small group of town residents have to band together after a devastating ground invasion. As they struggle to survive, they realize they must stay one step ahead of their attackers, and work together for a chance to strike back...

8). Open Grave (2013) (Movie Info + Poster + Trailer)

Full Review of Open Grave (2013)Open Grave poster
Score: 4.2/10 | IMDB Rating: 6.1/10 | IMDB Votes: 32,317 | Rotten Tomatoes: 1.9/10 | Metascore: 3.3/10 | MPAA Rating: Unrated
Thriller, Zombies, Cannibalism, Mind Bender, Sci-Fi, Virus
Plot / Synopsis: A man wakes up in the wilderness, in a pit full of dead bodies, with no memory and must determine if the murderer is one of the strangers who rescued him, or if he himself is the killer.Tagline: The moment you wake up, the nightmare begins...

7). Outland (1981) (Movie Info + Poster + Trailer)

Exploring Outland – Full ReviewOutland poster
Score: 5.76/10 | IMDB Rating: 6.6/10 | IMDB Votes: 34,022 | Rotten Tomatoes: 5.5/10 | Metascore: 4.8/10 | MPAA Rating: R | Gross: $17,374,595
Plot / Synopsis: In the distant future, a police marshal stationed at a remote mining colony on the Jupiter moon of Io uncovers a drug-smuggling conspiracy, and gets no help from the populace when he later finds himself marked for murder.Tagline: On Jupiter's moon something deadly is happening...

6). Open Your Eyes (1997) (Movie Info + Poster + Trailer)

Open Your Eyes poster
Score: 8.2/10 | IMDB Rating: 7.7/10 | IMDB Votes: 75,516 | Rotten Tomatoes: 8.7/10 | MPAA Rating: R | Gross: $370,720
Plot / Synopsis: A very handsome man finds the love of his life, but he suffers an accident and needs to have his face rebuilt by surgery after it is severely disfigured...

5). Outlander (2008) (Movie Info + Poster + Trailer)

What We Thought of OutlanderOutlander poster
Score: 5.46/10 | IMDB Rating: 6.2/10 | IMDB Votes: 80,413 | Rotten Tomatoes: 3.7/10 | Metascore: 4.0/10 | MPAA Rating: R | Gross: $166,003
Plot / Synopsis: During the reign of the Vikings, Kainan, a man from a far-off world, crash lands on Earth, bringing with him an alien predator known as the Moorwen. Though both man and monster are seeking revenge for violence committed against them, Kainan leads the alliance to kill the Moorwen by fusing his advanced technology with the Viking's Iron Age weaponry...

4). Overlord (2018) (Movie Info + Poster + Trailer)

In-Depth Overlord ReviewOverlord poster
Score: 6.96/10 | IMDB Rating: 6.6/10 | IMDB Votes: 112,047 | Rotten Tomatoes: 8.2/10 | Metascore: 6.0/10 | MPAA Rating: R | Gross: $21,704,844
Gore, Survival, War, Military, Mutants, Nazi
Plot / Synopsis: On the eve of D-Day, American paratroopers are dropped behind enemy lines to carry out a mission crucial to the invasion's success. But as they approach their target, they begin to realize there is more going on in this Nazi-occupied village than a simple military operation. They find themselves fighting against supernatural forces, part of a Nazi experiment...

3). Okja (2017) (Movie Info + Poster + Trailer)

Detailed Review: Okja (2017)Okja poster
Score: 7.54/10 | IMDB Rating: 7.3/10 | IMDB Votes: 138,766 | Rotten Tomatoes: 8.7/10 | Metascore: 7.5/10 | MPAA Rating: TV-MA
Plot / Synopsis: Joon-ho Bong's new film Okja (2017) is about a young girl doing everything she can to stop a huge company from taking her best friend - an incredible animal named Okja. It seems like this film is going to be a movie where the monster is the one who touches our heart and the humans are in fact the monsters...

1). Oblivion (2013) (Movie Info + Poster + Trailer)

Oblivion poster
Score: 5.9/10 | IMDB Rating: 7.0/10 | IMDB Votes: 574,745 | Rotten Tomatoes: 5.3/10 | Metascore: 5.4/10 | MPAA Rating: PG-13 | Gross: $89,107,235
Oblivion is Streaming on Netflix
Plot / Synopsis: A court martial sends a veteran soldier to a distant planet, where he has to destroy the remains of an alien race. The arrival of an unexpected traveler causes him to question what he knows about the planet, his mission, and himself...

Best Sci-fi Movies that Start with O

1). Open Your Eyes (1997) (Movie Info + Poster + Trailer)

Open Your Eyes poster
Score: 8.2/10 | IMDB Rating: 7.7/10 | IMDB Votes: 75,516 | Rotten Tomatoes: 8.7/10 | MPAA Rating: R | Gross: $370,720
Plot / Synopsis: A very handsome man finds the love of his life, but he suffers an accident and needs to have his face rebuilt by surgery after it is severely disfigured...

2). Okja (2017) (Movie Info + Poster + Trailer)

Detailed Review: Okja (2017)Okja poster
Score: 7.54/10 | IMDB Rating: 7.3/10 | IMDB Votes: 138,766 | Rotten Tomatoes: 8.7/10 | Metascore: 7.5/10 | MPAA Rating: TV-MA
Plot / Synopsis: Joon-ho Bong's new film Okja (2017) is about a young girl doing everything she can to stop a huge company from taking her best friend - an incredible animal named Okja. It seems like this film is going to be a movie where the monster is the one who touches our heart and the humans are in fact the monsters...

3). Overlord (2018) (Movie Info + Poster + Trailer)

In-Depth Overlord ReviewOverlord poster
Score: 6.96/10 | IMDB Rating: 6.6/10 | IMDB Votes: 112,047 | Rotten Tomatoes: 8.2/10 | Metascore: 6.0/10 | MPAA Rating: R | Gross: $21,704,844
Gore, Survival, War, Military, Mutants, Nazi
Plot / Synopsis: On the eve of D-Day, American paratroopers are dropped behind enemy lines to carry out a mission crucial to the invasion's success. But as they approach their target, they begin to realize there is more going on in this Nazi-occupied village than a simple military operation. They find themselves fighting against supernatural forces, part of a Nazi experiment...

5). On the Beach (1959) (Movie Info + Poster + Trailer)

On the Beach poster
Score: 6.8/10 | IMDB Rating: 7.1/10 | IMDB Votes: 15,266 | Rotten Tomatoes: 7.8/10 | Metascore: 5.5/10 | MPAA Rating: Approved
Plot / Synopsis: After a global nuclear war, the residents of Australia must come to terms with the fact that all life will be destroyed in a matter of months. Tagline: The Biggest Story Of our Time!...

6). Oblivion (2013) (Movie Info + Poster + Trailer)

Oblivion poster
Score: 5.9/10 | IMDB Rating: 7.0/10 | IMDB Votes: 574,745 | Rotten Tomatoes: 5.3/10 | Metascore: 5.4/10 | MPAA Rating: PG-13 | Gross: $89,107,235
Oblivion is Streaming on Netflix
Plot / Synopsis: A court martial sends a veteran soldier to a distant planet, where he has to destroy the remains of an alien race. The arrival of an unexpected traveler causes him to question what he knows about the planet, his mission, and himself...

7). Outland (1981) (Movie Info + Poster + Trailer)

Exploring Outland – Full ReviewOutland poster
Score: 5.76/10 | IMDB Rating: 6.6/10 | IMDB Votes: 34,022 | Rotten Tomatoes: 5.5/10 | Metascore: 4.8/10 | MPAA Rating: R | Gross: $17,374,595
Plot / Synopsis: In the distant future, a police marshal stationed at a remote mining colony on the Jupiter moon of Io uncovers a drug-smuggling conspiracy, and gets no help from the populace when he later finds himself marked for murder.Tagline: On Jupiter's moon something deadly is happening...

8). Outlander (2008) (Movie Info + Poster + Trailer)

What We Thought of OutlanderOutlander poster
Score: 5.46/10 | IMDB Rating: 6.2/10 | IMDB Votes: 80,413 | Rotten Tomatoes: 3.7/10 | Metascore: 4.0/10 | MPAA Rating: R | Gross: $166,003
Plot / Synopsis: During the reign of the Vikings, Kainan, a man from a far-off world, crash lands on Earth, bringing with him an alien predator known as the Moorwen. Though both man and monster are seeking revenge for violence committed against them, Kainan leads the alliance to kill the Moorwen by fusing his advanced technology with the Viking's Iron Age weaponry...

Full List of Sci-fi Movies that Start with O

1). Obex (2025) (Movie Info + Poster + Trailer)

Obex poster
Score: 5.29/10 | IMDB Rating: 5.5/10 | IMDB Votes: 521 | Rotten Tomatoes: 10.0/10 | MPAA Rating:
Fantasy, Sci-Fi
Plot / Synopsis: Conor Marsh's secluded life disrupted when he plays OBEX game. His dog Sandy disappears, blurring reality and game. Conor enters OBEX world to rescue Sandy, navigating its strange realms...

2). Oblivion (2013) (Movie Info + Poster + Trailer)

Oblivion poster
Score: 5.9/10 | IMDB Rating: 7.0/10 | IMDB Votes: 574,745 | Rotten Tomatoes: 5.3/10 | Metascore: 5.4/10 | MPAA Rating: PG-13 | Gross: $89,107,235
Oblivion is Streaming on Netflix
Plot / Synopsis: A court martial sends a veteran soldier to a distant planet, where he has to destroy the remains of an alien race. The arrival of an unexpected traveler causes him to question what he knows about the planet, his mission, and himself...

3). Occupants (2015) (Movie Info + Poster + Trailer)

Occupants poster
Score: 4.75/10 | IMDB Rating: 5.0/10 | IMDB Votes: 1,333 | MPAA Rating: R
Plot / Synopsis: A documentarian named Annie has roped her husband into a project that involves setting up cameras throughout their house. Complications arise when the cameras start showing that same couple in an alternate universe. Tagline: Who's watching who?...

4). Occupation (2018) (Movie Info + Poster + Trailer)

Occupation poster
Score: 4.67/10 | IMDB Rating: 4.5/10 | IMDB Votes: 17,811 | Rotten Tomatoes: 5.0/10 | Metascore: 4.5/10 | MPAA Rating: R
Plot / Synopsis: A small group of town residents have to band together after a devastating ground invasion. As they struggle to survive, they realize they must stay one step ahead of their attackers, and work together for a chance to strike back...

7). Officer Downe (2016) (Movie Info + Poster + Trailer)

Detailed Review: Officer Downe (2016)Officer Downe poster
Rotten Tomatoes: 3.3/10 | Metascore: 2.6/10 | MPAA Rating: 0 | Gross: $850
Plot / Synopsis: Shawn Crahan's Officer Downe (2016) is an intense looking action sci-fi film. Officer Downe returns from the dead from an experiment and commences to be an unkillable force against crime. The villains look fun and exciting with their costume designs. Kim Coates, Tyler Ross, and Meadow Williams star in Officer Downe...

8). Offseason (2021) (Movie Info + Poster + Trailer)

Offseason poster
Score: 5.7/10 | IMDB Rating: 4.9/10 | IMDB Votes: 2,895 | Rotten Tomatoes: 6.7/10 | Metascore: 5.5/10 | MPAA Rating: R
Offseason is Streaming on Shudder
Plot / Synopsis: After receiving a mysterious letter, a woman travels to a desolate island town and soon becomes trapped in a nightmare...

10). Okja (2017) (Movie Info + Poster + Trailer)

Detailed Review: Okja (2017)Okja poster
Score: 7.54/10 | IMDB Rating: 7.3/10 | IMDB Votes: 138,766 | Rotten Tomatoes: 8.7/10 | Metascore: 7.5/10 | MPAA Rating: TV-MA
Plot / Synopsis: Joon-ho Bong's new film Okja (2017) is about a young girl doing everything she can to stop a huge company from taking her best friend - an incredible animal named Okja. It seems like this film is going to be a movie where the monster is the one who touches our heart and the humans are in fact the monsters...

11). Old Strangers (2022) (Movie Info + Poster + Trailer)

Old Strangers poster
Score: 4.29/10 | IMDB Rating: 3.5/10 | IMDB Votes: 253 | Rotten Tomatoes: 4.0/10 | MPAA Rating: R
Plot / Synopsis: Three friends reconnect in a secluded mountain town after a long quarantine. While out for a hike, the trio stumble upon something dark and terrible in the deep woods...

12). Ombis: Alien Invasion (2013) (Movie Info + Poster + Trailer)

Ombis: Alien Invasion poster
Score: 4.09/10 | IMDB Rating: 3.4/10 | IMDB Votes: 560 | MPAA Rating: R
Plot / Synopsis: Peaceful, rustic Metzburgh is a quiet village which was a former industrial town whose glory days are long past after the collapse of Metzburgh Grain... Tagline: the Invasion Begins 2013...

13). On the Beach (1959) (Movie Info + Poster + Trailer)

On the Beach poster
Score: 6.8/10 | IMDB Rating: 7.1/10 | IMDB Votes: 15,266 | Rotten Tomatoes: 7.8/10 | Metascore: 5.5/10 | MPAA Rating: Approved
Plot / Synopsis: After a global nuclear war, the residents of Australia must come to terms with the fact that all life will be destroyed in a matter of months. Tagline: The Biggest Story Of our Time!...

15). Only (2019) (Movie Info + Poster + Trailer)

Only poster
Score: 4.7/10 | IMDB Rating: 5.1/10 | IMDB Votes: 4,004 | Rotten Tomatoes: 3.7/10 | Metascore: 5.3/10 | MPAA Rating: R
Plot / Synopsis: After a comet releases a mysterious virus that begins to kill all of the women in the world, a young couple's relationship is severely tested. They hide out (from both the illness and the savages who hunt the remaining women) in their over-sterilized apartment. Ultimately the duo escapes their self-imposed quarantine to head to the wilderness for one final...

Showing 1 to 15 from Page 1 of 2

Click for the Internet's Best Horror Sites
Only at DarkTopSites Horror Directory!