Discover the 2 types of science fiction and learn how to write each one, from mainstream sci-fi to niche, high-concept stories.
In this article, I talk about the two types of science fiction and what you should consider when writing them. I’ll look at what they are and the audience reception for these two broad categories.
The 2 Types Of Science Fiction & How To Write Them
1. Mainstream Science Fiction
This category includes science fantasy series like Star Wars and dramatic speculative fiction like Blade Runner and The Hunger Games.
This genre is often mocked by purists as popcorn science fiction. It has lots of explosions and even more personal drama. There are wizards with laser swords fighting evil space samurai. It has Infinity Stones that can end all life, and technology that defies the laws of nature.
But it is often the most enjoyable.
I love Star Wars (most of the time), Marvel, and all the other wacky space operas. They are a great way to unwind and take it easy while watching something entertaining.
Guardians of the Galaxy is a perfect example of this feel-good style of science fiction. Getting from planet to planet is just like popping out to the shops for a bottle of space milk.
As for books in this genre, they can be just as crazy. We see this in early science fantasy works like John Carter of Mars (later also a comic book series, and then a big Hollywood movie that nobody saw). It is about an American cowboy who goes on adventures on Mars, marries a princess, defeats evil cannibals, and does some very non-PC things. It was written more than one hundred years ago, though, so some forgiveness is probably in order.
The various teenage sci-fi books of the nineties, and the slew of post-apocalyptic visions of the future we saw in the 2010s, also fall into this broad category. Animorphs and The Hunger Games stand out as dramatic, relationship-driven examples.
They don’t always work.
Some movies that should be slow, intellectual science fiction become giant action-packed blockbusters. They lose something when this happens.
For example, Oblivion (2013) had an interesting premise. Alien overlords used humans to harvest resources from Earth by making them think they were saving the planet. This was ruined, in large part, by non-stop action sequences and bizarre casting choices that distracted from what could have been an interesting story.
Andy Weir‘s The Martian is a good example of a quiet, personal, and thoughtful take on science fiction. The book was more about the science than the movie, but both convey a sense of quiet drama that allows us to invest in the characters.
How To Write Mainstream Science Fiction
- Simplify your plot. If there are more than four main characters, you need to cut them. You should have one main plot and, at most, one sub-plot.
- Use ideas children would understand. Good-versus-evil battles are perfect here. It should not be about the grey areas of morality. The evil guys should live in a big, evil spaceship and wear capes. The good guys should be likeable and fun to be around.
- Raise the stakes quickly. Start off with a personal struggle that the protagonist needs to overcome – like getting off the family farm. Then involve them in an epic battle to save the world. This is not the place for a slow build up.
- Wrap it up. This type of fiction is best when the story is short and wraps up all the loose ends. It should leave the reader satisfied that they know everything they want to know about your characters.
2. Niche Science Fiction
This category includes hard science fiction like The Expanse. It also includes morality plays and speculative, progressive science fiction like the old Star Trek (not the new flashy ones by Kurtzman and Abrams).
The Martian book fits better here, but the movie was made for a mainstream audience.
More traditional science fiction like Star Trek is often seen as being about science and technology, including time travel. Sometimes this is true. We see that in 2001: a Space Odyssey, where the movie is partly about the emergence of artificial intelligence and space travel.
But most science fiction is mostly about the fiction.
Sure, Arthur C. Clarke and Larry Niven make attempts to describe something cool using real scientific principles, but they sometimes ignore those principles a few chapters in.
Clarke’s The City And The Stars begins as an intellectual look into transhumanism and what society might look like if we cured death and all other human needs. It soon becomes a story about psychic people and crazy scientists literally inventing God and the Devil. Niven’s books become more salacious as he ages.
I’m not saying it’s boring or not worth your time. I’m just saying that science fiction is often about ideas and not science.
Star Trek is about morality and not spaceships. It asks what would happen if humans stopped hating each other:
- What miracles could we achieve?
- Could we even conquer the stars and make the galaxy into a utopia?
Star Trek was a beautiful dream from the mind of a gentle soul. It gave generations of people coming out of horrific wars and living under the threat of nuclear war hope for the future of humanity.
Sadly, it has since devolved into teen-angst drama in its latest incarnations.
How To Write Niche Science Fiction
- Build the story. In high-concept science fiction, you can build up the story over several books or dozens of movies or episodes. Drip-feed the main threat to your story. This will make people feel invested in the world. Then show how great the threat to that world is. Readers must really want your world and characters to survive. This does not mean you should make it boring. Good writers entertain even as they withhold information from their audience. In this genre, you can develop more plots and many more subplots. You will also need more characters for all the plots.
- Have you story mean something. It should teach us a lesson or inform us about something important. Regardless of what this is, it should make your reader or viewer feel like they are better off for spending their time with your story.
- Say difficult things. Say something that is not often said. Star Trek talked about race when most shows avoided the issue. Speculative fiction is there to push new ideas. Don’t play it safe if you have something important to say.
- There is always something more to say. You should have a cliffhanger even at the very end of the last book in the series. This is for people who like to think. The people who read these book are the kind of people who would happily spend a week coming up with a solution to the cliffhanger on an online message board. You should encourage this.
The Difference
Niche science fiction has a smaller audience. Star Trek, one of the most successful of these franchises, was always about a tenth of the size of Star Wars. However, the fans of these smaller franchises were so loyal and so passionate that they were hugely profitable, and they felt much bigger than they were.
Stargate was another niche science fiction universe centred around the US military using wormholes to teleport to other planets. It was never huge. It never felt like it had a large budget, but it sold toys and books, and people tuned in every week for 15 years.
You can be a very successful author of niche science fiction because of the loyalty of the fan base. Better still, you don’t need to sell your soul to a giant corporation who no doubt will want you to ‘punch it up’ for a wider audience.
That is not to say mainstream science fiction can’t be meaningful. I think the early Star Wars movies and, more recently, The Avengers have shown that you can have an emotionally satisfying series of movies while still appealing to almost everyone. They just can’t be smart.
There is no space for the weirdness of high-concept sci-fi like Farscape in Marvel or Star Wars (except perhaps in the spin-off novels).
Farscape was a truly remarkable series, both for its creativity and its dedication to the genre. It was always weird and alien, but also thought-provoking and emotional. It was the best of all worlds.
Unfortunately, it seems that people don’t want a mixture of high-concept and mainstream. They are very comfortable in one space or the other, and that’s fine. Just bear that in mind when you write science fiction.
The Last Word
Successful science fiction knows its audience. George Lucas knew he was writing for children and Arthur C. Clark knew he was writing for engineers. Both did very well with these demographics.
If you are in it for the big money, be sure to stick to the formulas used by the most successful franchises. They are well known and proven to work. If, however, you want to be talked about decades from now in the tones reserved for Clarke and Asimov, then you might want to go off the beaten path.
You may also want to check out these other helpful articles on writing science fiction:
- A Complete Glossary Of Terms For Science Fiction Writers
- 101 Sci-Fi Tropes For Writers
- 5 Things You Need To Know To Write Science Fiction
- The 4 Pillars Of Science Fiction
- How To Write A Space Opera

by Christopher Luke Dean (Or at least his clone.) Christopher writes and facilitates for Writers Write.
More posts from Christopher:
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- A Complete Glossary Of Terms For Fantasy Writers
- A Complete Glossary Of Terms For Science Fiction Writers
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