Best Sci Fi Movies to Stream Now

Published On

July 16, 2025

Few film genres spark the imagination quite like science fiction. From soaring space adventures to chilling dystopian futures and mind-bending thrillers, sci-fi consistently pushes the boundaries of storytelling and visual effects. It offers a unique lens through which to explore complex ideas about humanity, technology, and what lies beyond our current understanding.

For those keen to explore the genre’s best, we’ve compiled a definitive list. Our selection features the top 20 sci-fi movies, ranked by their IMDb scores, ensuring you’ll find quality viewing whether you’re after a classic or something more recent. Blast-off into some truly unforgettable cinematic experiences with these 20 movies!

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When curating a list of the best sci-fi movies, a clear and consistent approach is essential. Our ranking system prioritises IMDb rating as the primary factor, ensuring a data-driven foundation for our selections. But we understand that a truly comprehensive guide requires more than just a score, which is why we’ve also included key details for each film.

Every entry in our top 20 features its title, the year it was released, the director at the helm, and a summary of the main cast. We also note where you can find each movie by listing the streaming service available in Australia. For those who value critical acclaim, we’ve added information on awards won, alongside the age rating and a brief synopsis to help you choose your next watch. This detailed breakdown ensures you have all the necessary information at your fingertips.

1
Rank: #32
1
Rank: #32
2
Rank: #38
2
Rank: #38
3
Rank: #46
3
Rank: #46
4
Rank: #69
4
Rank: #69
5
Rank: #76
5
Rank: #76
6
Rank: #88
6
Rank: #88
7
Rank: #92
7
Rank: #92
8
Rank: #110
8
Rank: #110
9
Rank: #127
9
Rank: #127
10
Rank: #139
10
Rank: #139
11
Rank: #157
11
Rank: #157
12
Rank: #165
12
Rank: #165
13
Rank: #172
13
Rank: #172
14
Rank: #175
14
Rank: #175
15
Rank: #186
15
Rank: #186
16
Rank: #194
16
Rank: #194
17
Rank: #195
17
Rank: #195
18
Rank: #212
18
Rank: #212
19
Rank: #227
19
Rank: #227
20
Rank: #231
20
Rank: #231

Looking for something else? Find it here.

What defines a science fiction movie?

Science fiction films typically explore speculative concepts, often involving advanced technology, future societies, space travel, or extraterrestrial life. They use these elements to tell engaging stories, frequently examining what it means to be human, the impact of scientific progress, or challenging our understanding of reality. You’ll find a blend of imagination and thought-provoking ideas.

Are all the best sci-fi movies available on streaming services in Australia?

While many top-tier sci-fi films are available to stream in Australia, availability can vary. Streaming services regularly update their libraries, so a movie might be on one platform today and another tomorrow, or even rotate off services entirely. Our list aims to provide current availability, but it’s always a good idea to double-check.

How do you choose which movies make it onto your “best of” lists?

Our selections are carefully made using a clear methodology. For this sci-fi list, we focused on films with high IMDb ratings to ensure popular and critically acclaimed choices. We then cross-referenced these with Australian streaming availability to offer you genuinely streamable recommendations.

What are some popular subgenres within science fiction films?

The sci-fi genre is incredibly diverse! You’ll often come across space opera, with its grand adventures and epic conflicts, like Star Wars, while dystopian futures, showing bleak societies, are another common theme, as are mind-bending thrillers that play with perception and reality. Other popular types include cyberpunk, alien invasion stories, and time travel narratives.

Will this list include older sci-fi classics or just newer releases?

Our list embraces a wide range of sci-fi films, spanning various eras. You’ll find beloved classics that have stood the test of time alongside more recent blockbusters. The aim is to give you a well-rounded selection of the genre’s best, regardless of their release year, all ranked by their IMDb scores.

Why is the IMDb rating used as the main ranking factor?

The IMDb rating is a widely recognised and respected metric, reflecting a large audience’s collective opinion on a film’s quality. By using it as our primary ranking factor, we aim to provide a credible and objective foundation for our “best of” list, making it easy for you to identify highly regarded movies.

Can I find these movies on free streaming services?

Some of the films on our list might occasionally be available on free streaming services in Australia, particularly those with ad-supported models. However, the majority of the top-rated sci-fi movies typically reside on subscription-based platforms. We’ll always indicate which service hosts each film.

How often do you update these “best of” movie lists?

We strive to keep our content current and relevant. Streaming availabilities and IMDb ratings can shift, so we regularly review and update our “best of” movie lists. This ensures that the information you find here is as accurate and helpful as possible for your next sci-fi movie night.

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