15 Best Science Fiction Series to Read in 2025
Looking for the best science fiction series? We picked thrilling adventures, clever worlds, and fun twists that make these books unforgettable favorites.
Welcome to our very serious and not-at-all nerdy hunt for the best science fiction series out there! We picked these books because they make us gasp, laugh, think—sometimes all on the same page. We’re talking wild new worlds, big ideas, and yes, characters who don’t make us want to throw the book across the room (well, most of the time). This list is for anybody who wants stories that stick in your brain and make you wonder if your toaster is plotting something. Get ready for spaceships, sass, and a galaxy full of adventure in our round-up of the best science fiction series!
On this list:
- The Expanse Series
- Dune Saga
- The Foundation Series
- Hyperion Cantos
- Red Rising Saga
- The Three-Body Problem Trilogy (Remembrance of Earth’s Past)
- Old Man’s War Series
- Culture Series
- The Bobiverse Trilogy
- Revelation Space Series
- Wayfarers Series
- Murderbot Diaries
- Vorkosigan Saga
- The Commonwealth Saga
- Ender’s Saga
15 The Expanse Series by James S. A. Corey
We picked this one because it’s so fun and packed with space action. Our group kept arguing if Amos or Holden is cooler, but we all agreed these books make you want to yell at politicians and hug your air recycler.
14 Dune Saga by Frank Herbert
Spice, sandworms, and more politics than our last game night. We love talking about which character would survive in a desert – none of us.
13 The Foundation Series by Isaac Asimov
We picked this for its wild ideas and epic timelines. We always get lost in the talk about psychohistory—and sometimes the storyline, too.
12 Hyperion Cantos by Dan Simmons
These books have poetry, shrikes, and time travel headaches. We loved and hated the cliffhangers but kept reading, because who doesn’t love pain?
11 Red Rising Saga by Pierce Brown
Space Roman gladiators, anyone? We argued about who would win a fight, and then all agreed Sevro would cheat and win by accident.
10 The Three-Body Problem Trilogy (Remembrance of Earth’s Past) by Liu Cixin
Aliens and physics lessons that made us feel very, very dumb. But wow, what a thrill! The science sometimes broke our brains, but we kept going.
9 Old Man’s War Series by John Scalzi
Grandparents in space suits! We wish our own grandparents could do this. The humor and action kept us all laughing and guessing.
8 Culture Series by Iain M. Banks
Do AIs with jokes make the best science fiction series? Yes, if you ask our group. Some books are confusing, but all are weird and cool.
7 The Bobiverse Trilogy by Dennis E. Taylor
Bob is a spaceship and he’s hilarious. Our group wishes we could reboot as Bobs, minus existential crisis. Easy to read and fun to discuss.
6 Revelation Space Series by Alastair Reynolds
Big ideas and some big headaches. Dark, deep, and full of space mysteries. We always end up lost but happy to be confused together.
5 Wayfarers Series by Becky Chambers
If you like cozy space road trips, this is it. We all wanted to hug the ship and its oddball crew. Good for gentle sci-fi fans.
4 Murderbot Diaries by Martha Wells
A snarky robot who hates people but can’t stop saving them? This is the best science fiction series if you love social anxiety in space.
3 Vorkosigan Saga by Lois McMaster Bujold
Strong characters, fancy politics, and space battles. We keep saying ‘just one more book’ and then finish the series. Addictive and fun all the way.
2 The Commonwealth Saga by Peter F. Hamilton
Big, chewy books with tons of characters and even more plot. You might get a bit lost, but it’s a wild, spacey ride.
1 Ender’s Saga by Orson Scott Card
We argue over Ender’s ethics and then just get lost in the battles. This series is a must for anyone who loves mind games and growing up too fast.
