13 must-read space opera books like Old Man's War (Old Man's War, #1) by John Scalzi

Cover of Old Man's War (Old Man's War, #1) by John Scalzi

Old Man's War (Old Man's War, #1)

By: John Scalzi

4.24

Format: 318 pages, Kindle Edition

John Perry did two things on his 75th birthday. First he visited his wife's grave. Then he joined t…

"It’s war, you jackasses,"

-John Scalzi, Old Man's War (Old Man's War, #1)

"It’s war, you jackasses,"

-John Scalzi, Old Man's War (Old Man's War, #1)

"It’s war, you jackasses,"

-John Scalzi, Old Man's War (Old Man's War, #1)

"It’s war, you jackasses,"

-John Scalzi, Old Man's War (Old Man's War, #1)

If you liked the space opera plot in Old Man's War (Old Man's War, #1) by John Scalzi , here is a list of 13 books like this:

Cover of For We Are Many (Bobiverse, #2) by Ray Porter, Dennis E. Taylor

1. For We Are Many (Bobiverse, #2)

By: Ray Porter , Dennis E. Taylor

4.37

Format: 311 pages, Audible Audio

Bob Johansson didn't believe in an afterlife, so waking up after being killed in a car accident was… read more

Similar categories in Ray Porter's For We Are Many (Bobiverse, #2) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • adventure
  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • fantasy
  • audiobook
"What does kaheerakah mean?"

-Ray Porter, For We Are Many (Bobiverse, #2)

"I always wanted to be a bad influence."

-Ray Porter, For We Are Many (Bobiverse, #2)

Cover of We Are Legion (We Are Bob) (Bobiverse, #1) by Dennis E. Taylor

2. We Are Legion (We Are Bob) (Bobiverse, #1)

By: Dennis E. Taylor

4.28

Format: 383 pages, Kindle Edition

Alternate Cover Edition can be found here. Bob Johansson has just sold his software company and… read more

Similar categories in Dennis E. Taylor's We Are Legion (We Are Bob) (Bobiverse, #1) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • adventure
  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • fantasy
  • audiobook
"Above my pay grade!"

-Dennis E. Taylor, We Are Legion (We Are Bob) (Bobiverse, #1)

"Thank God for family. And than GOD for a couple of miles of distance."

-Dennis E. Taylor, We Are Legion (We Are Bob) (Bobiverse, #1)

"Um. Ways in which a sentence beginning with the word "missiles" could be a good thing... Nope. I got nuthin'."

-Dennis E. Taylor, We Are Legion (We Are Bob) (Bobiverse, #1)

Cover of All Systems Red (The Murderbot Diaries, #1) by Martha Wells

3. All Systems Red (The Murderbot Diaries, #1)

By: Martha Wells

4.15

Format: 144 pages, ebook

"As a heartless killing machine, I was a complete failure." In a corporate-dominated space-farin… read more

Similar categories in Martha Wells's All Systems Red (The Murderbot Diaries, #1) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • fantasy
"On the entertainment feed, this is what they call an “oh shit"

-Martha Wells, All Systems Red (The Murderbot Diaries, #1)

"They don't give murderbots decent education modules on anything except murdering, even those are cheap versions."

-Martha Wells, All Systems Red (The Murderbot Diaries, #1)

"If the humans see me actually doing my job, it helps keep suspicions from forming about faulty governor modules."

-Martha Wells, All Systems Red (The Murderbot Diaries, #1)

"I liked the imaginary people on the entertainment feed way more than I liked real ones, but you can’t have one without the other."

-Martha Wells, All Systems Red (The Murderbot Diaries, #1)

Cover of The Three-Body Problem (Remembrance of Earth’s Past, #1) by Ken Liu, Liu Cixin

4. The Three-Body Problem (Remembrance of Earth’s Past, #1)

By: Ken Liu , Liu Cixin

4.08

Format: 472 pages, Hardcover

Set against the backdrop of China's Cultural Revolution, a secret military project sends signals in… read more

Similar categories in Ken Liu's The Three-Body Problem (Remembrance of Earth’s Past, #1) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • science fiction fantasy
  • fiction
  • science fiction
  • fantasy
  • audiobook
"It’s easy to be led to the abyss."

-Ken Liu, The Three-Body Problem (Remembrance of Earth’s Past, #1)

"Your lack of fear is based on your ignorance."

-Ken Liu, The Three-Body Problem (Remembrance of Earth’s Past, #1)

"Intellectuals always make a fuss about nothing."

-Ken Liu, The Three-Body Problem (Remembrance of Earth’s Past, #1)

"A woman should be like water, able to flow over and around anything."

-Ken Liu, The Three-Body Problem (Remembrance of Earth’s Past, #1)

Cover of Hyperion (Hyperion Cantos, #1) by Dan Simmons

5. Hyperion (Hyperion Cantos, #1)

By: Dan Simmons

4.27

Format: 500 pages, Mass Market Paperback

On the world called Hyperion, beyond the law of the Hegemony of Man, there waits the creature calle… read more

Similar categories in Dan Simmons's Hyperion (Hyperion Cantos, #1) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • fantasy
  • audiobook
"You have to live to really know things, my love"

-Dan Simmons, Hyperion (Hyperion Cantos, #1)

"In such seconds of decision entire futures are made."

-Dan Simmons, Hyperion (Hyperion Cantos, #1)

"The whole planet reeks of mysticism without revelation."

-Dan Simmons, Hyperion (Hyperion Cantos, #1)

"The essence of honor lay in the moment of combat between equals."

-Dan Simmons, Hyperion (Hyperion Cantos, #1)

6. Ancillary Justice (Imperial Radch, #1)

By: Ann Leckie

3.87

Format: None pages, Paperback

On a remote, icy planet, the soldier known as Breq is drawing closer to completing her quest. Once,… read more

Similar categories in Ann Leckie's Ancillary Justice (Imperial Radch, #1) book and John Scalzi's Old Man's War (Old Man's War, #1)

Cover of Leviathan Wakes (The Expanse, #1) by James S.A. Corey

7. Leviathan Wakes (The Expanse, #1)

By: James S.A. Corey

4.31

Format: 592 pages, Paperback

Humanity has colonized the solar system—Mars, the Moon, the Asteroid Belt and beyond—but the stars … read more

Similar categories in James S.A. Corey's Leviathan Wakes (The Expanse, #1) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • adventure
  • science fiction fantasy
  • fiction
  • science fiction
  • space
  • fantasy
  • audiobook
"GOODY. MY SPLEEN IS COLLAPSING. HURRY UP."

-James S.A. Corey, Leviathan Wakes (The Expanse, #1)

"Fish and company start to smell after three days."

-James S.A. Corey, Leviathan Wakes (The Expanse, #1)

"Nothing like a little shared racism to build ties with the boss."

-James S.A. Corey, Leviathan Wakes (The Expanse, #1)

"Part of his mind was screaming, but it was a distant one and easy to ignore."

-James S.A. Corey, Leviathan Wakes (The Expanse, #1)

Cover of The Forever War (The Forever War, #1) by Joe Haldeman

8. The Forever War (The Forever War, #1)

By: Joe Haldeman

4.14

Format: 278 pages, Paperback

The Earth's leaders have drawn a line in the interstellar sand—despite the fact that the fierce ali… read more

Similar categories in Joe Haldeman's The Forever War (The Forever War, #1) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • military fiction
  • science fiction fantasy
  • space opera
  • war
  • fiction
  • science fiction
  • space
  • fantasy
"Don't worry about that, Man, just make out my ticket."

-Joe Haldeman, The Forever War (The Forever War, #1)

"Tonight we're going to show you eight silent ways to kill a man."

-Joe Haldeman, The Forever War (The Forever War, #1)

"I was too old-fashioned male-chauv to allow that; we discussed for a minute and I wound up with the couch"

-Joe Haldeman, The Forever War (The Forever War, #1)

"Doctors don’t seem to realize that most of us are perfectly content not having to visualize ourselves as animated bags of skin filled with obscene glop."

-Joe Haldeman, The Forever War (The Forever War, #1)

Cover of Rendezvous with Rama (Rama, #1) by Arthur C. Clarke

9. Rendezvous with Rama (Rama, #1)

By: Arthur C. Clarke

4.12

Format: 243 pages, Paperback

At first, only a few things are known about the celestial object that astronomers dub Rama. It is h… read more

Similar categories in Arthur C. Clarke's Rendezvous with Rama (Rama, #1) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • science fiction fantasy
  • fiction
  • science fiction
  • space
  • fantasy
  • audiobook
"He had a suspicion of plausible answers; they were so often wrong."

-Arthur C. Clarke, Rendezvous with Rama (Rama, #1)

"In these latter days, knighthood was an honor few Englishmen escaped."

-Arthur C. Clarke, Rendezvous with Rama (Rama, #1)

"If such a thing had happened once, it must surely have happened many times in this galaxy of a hundred billion suns."

-Arthur C. Clarke, Rendezvous with Rama (Rama, #1)

"Yes, it made sense, and was so absurdly simple that it would take a genius to think of it. And, perhaps, someone who did not expect to do it himself."

-Arthur C. Clarke, Rendezvous with Rama (Rama, #1)

10. Children of Time

By: Adrian Tchaikovsky

3.82

Format: None pages, Hardcover

A race for survival among the stars... Humanity's last survivors escaped earth's ruins to find a ne… read more

Similar categories in Adrian Tchaikovsky's Children of Time book and John Scalzi's Old Man's War (Old Man's War, #1)

Cover of Starship Troopers by Robert A. Heinlein

11. Starship Troopers

By: Robert A. Heinlein

4.01

Format: 264 pages, Mass Market Paperback

The historians can’t seem to settle whether to call this one "The Third Space War" (or the fourth),… read more

Similar categories in Robert A. Heinlein's Starship Troopers book and John Scalzi's Old Man's War (Old Man's War, #1)

  • military fiction
  • science fiction fantasy
  • space opera
  • war
  • fiction
  • science fiction
  • space
  • fantasy
  • audiobook
"To permit irresponsible authority is to sell disaster."

-Robert A. Heinlein, Starship Troopers

"Violence, naked force, has settled more issues in history than has any other factor."

-Robert A. Heinlein, Starship Troopers

"But, do you know, once you get used to it's rather cute. I mean, if a girl looks alright to start with, she still looks alright with her head smooth."

-Robert A. Heinlein, Starship Troopers

"When you vote, you are exercising political authority, you're using force. And force, my friends, is violence. The supreme authority from which all other authorities are derived."

-Robert A. Heinlein, Starship Troopers

12. All These Worlds (Bobiverse, #3)

By: Dennis E. Taylor

4.57

Format: 140 pages,

Being a sentient spaceship really should be more fun. But after spreading out through space for alm… read more

Similar categories in Dennis E. Taylor's All These Worlds (Bobiverse, #3) book and John Scalzi's Old Man's War (Old Man's War, #1)

Cover of System Collapse (The Murderbot Diaries, #7) by Martha Wells

13. System Collapse (The Murderbot Diaries, #7)

By: Martha Wells

4.22

Format: 245 pages, Hardcover

Am I making it worse? I think I'm making it worse. Everyone's favorite lethal SecUnit is back. … read more

Similar categories in Martha Wells's System Collapse (The Murderbot Diaries, #7) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • fantasy
  • audiobook
"(I'm going to have to code a patch for threat assessment.)"

-Martha Wells, System Collapse (The Murderbot Diaries, #7)

"I said, “Have you done something that you feel you should be threatened for?"

-Martha Wells, System Collapse (The Murderbot Diaries, #7)

"Bad things may not be more statistically possible but it sure seems like they are."

-Martha Wells, System Collapse (The Murderbot Diaries, #7)

"Then he sent me a note back. So, you may not know this but I read your letter to Dr. Mensah, the one you sent when you left Port FreeCommerce. I think you're absolutely the right person to write this…"

-Martha Wells, System Collapse (The Murderbot Diaries, #7)

Cover of Old Man's War (Old Man's War, #1) by John Scalzi

14. Old Man's War (Old Man's War, #1)

By: John Scalzi

4.24

Format: 318 pages, Kindle Edition

John Perry did two things on his 75th birthday. First he visited his wife's grave. Then he joined t… read more

Similar categories in John Scalzi's Old Man's War (Old Man's War, #1) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • adventure
  • military fiction
  • science fiction fantasy
  • space opera
  • war
  • fiction
  • science fiction
  • space
  • fantasy
  • audiobook
"It’s war, you jackasses,"

-John Scalzi, Old Man's War (Old Man's War, #1)

"Christ on a Popsicle stick."

-John Scalzi, Old Man's War (Old Man's War, #1)

"What we don't know can't hurt us."

-John Scalzi, Old Man's War (Old Man's War, #1)

"We don’t get to choose our battles."

-John Scalzi, Old Man's War (Old Man's War, #1)

Cover of Rogue Protocol (The Murderbot Diaries, #3) by Martha Wells

15. Rogue Protocol (The Murderbot Diaries, #3)

By: Martha Wells

4.26

Format: 160 pages, Hardcover

SciFi’s favorite antisocial A.I. is again on a mission. The case against the too-big-to-fail GrayCr… read more

Similar categories in Martha Wells's Rogue Protocol (The Murderbot Diaries, #3) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • adventure
  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • audiobook
"I was tired of pretending to be human. I needed a break."

-Martha Wells, Rogue Protocol (The Murderbot Diaries, #3)

"Pretending bad things aren’t happening is not a great survival strategy."

-Martha Wells, Rogue Protocol (The Murderbot Diaries, #3)

"I hate caring about stuff. But apparently once you start, you can't just stop."

-Martha Wells, Rogue Protocol (The Murderbot Diaries, #3)

"I didn’t want to see helpless humans. I’d rather see smart ones rescuing each other."

-Martha Wells, Rogue Protocol (The Murderbot Diaries, #3)

Cover of Fugitive Telemetry (The Murderbot Diaries, #6) by Martha Wells

16. Fugitive Telemetry (The Murderbot Diaries, #6)

By: Martha Wells

4.31

Format: 168 pages, Hardcover

No, I didn’t kill the dead human. If I had, I wouldn’t dump the body in the station mall. When M… read more

Similar categories in Martha Wells's Fugitive Telemetry (The Murderbot Diaries, #6) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • audiobook
"Tural left with the air of escaping before things got worse."

-Martha Wells, Fugitive Telemetry (The Murderbot Diaries, #6)

"The only thing worse than humans infantilizing bots was bots infantilizing themselves."

-Martha Wells, Fugitive Telemetry (The Murderbot Diaries, #6)

"Humans so the "make it a question so it doesn't sound so bad" thing and it still sounds bad."

-Martha Wells, Fugitive Telemetry (The Murderbot Diaries, #6)

"Humans do the "make it a question so it doesn't sound so bad" thing and it still sounds bad."

-Martha Wells, Fugitive Telemetry (The Murderbot Diaries, #6)

Cover of Exit Strategy (The Murderbot Diaries, #4) by Martha Wells

17. Exit Strategy (The Murderbot Diaries, #4)

By: Martha Wells

4.38

Format: 176 pages, Kindle Edition

Murderbot wasn’t programmed to care. So, its decision to help the only human who ever showed it res… read more

Similar categories in Martha Wells's Exit Strategy (The Murderbot Diaries, #4) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • adventure
  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • audiobook
"Why is this ship so old and shitty?"

-Martha Wells, Exit Strategy (The Murderbot Diaries, #4)

"I was having an emotion, and I hate that."

-Martha Wells, Exit Strategy (The Murderbot Diaries, #4)

"Once I started telling the truth, it was hard to stop."

-Martha Wells, Exit Strategy (The Murderbot Diaries, #4)

"But they were humans— who knows why they did anything?"

-Martha Wells, Exit Strategy (The Murderbot Diaries, #4)

Cover of Heaven's River (Bobiverse, #4) by Dennis E. Taylor

18. Heaven's River (Bobiverse, #4)

By: Dennis E. Taylor

4.29

Format: 17 pages, Audible Audio

Listening Length: 16 hours and 57 minutes Civil war looms in the Bobiverse in this brand-new, ep… read more

Similar categories in Dennis E. Taylor's Heaven's River (Bobiverse, #4) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • fantasy
  • audiobook
"Subtlety: I no haz it."

-Dennis E. Taylor, Heaven's River (Bobiverse, #4)

"Sadly, it was like most political arguments. No one was willing to debate their base assumptions or justify them or compromise on them. The simple tactic being that if you repeated your assertion oft…"

-Dennis E. Taylor, Heaven's River (Bobiverse, #4)

"We'd gotten onto the concept or morality and Frida had just asked Theresa how she could have any sense of morality without a deity to define what was or was not moral. [...] "What deities give you ar…"

-Dennis E. Taylor, Heaven's River (Bobiverse, #4)

Cover of Network Effect (The Murderbot Diaries, #5) by Martha Wells

19. Network Effect (The Murderbot Diaries, #5)

By: Martha Wells

4.47

Format: 350 pages, Hardcover

It calls itself Murderbot, but only when no one can hear. It worries about the fragile human cre… read more

Similar categories in Martha Wells's Network Effect (The Murderbot Diaries, #5) book and John Scalzi's Old Man's War (Old Man's War, #1)

  • adventure
  • science fiction fantasy
  • space opera
  • fiction
  • science fiction
  • space
  • audiobook
"Ugh, emotions."

-Martha Wells, Network Effect (The Murderbot Diaries, #5)

"So, you have a relationship with this transport."

-Martha Wells, Network Effect (The Murderbot Diaries, #5)

"I'm a murderbot, I don't give a crap about boats."

-Martha Wells, Network Effect (The Murderbot Diaries, #5)

"I am actually trying my best despite the fuck-ups."

-Martha Wells, Network Effect (The Murderbot Diaries, #5)

Cover of Service Model by Adrian Tchaikovsky

20. Service Model

By: Adrian Tchaikovsky

4.06

Format: 376 pages, Hardcover

To fix the world they first must break it further. Humanity is a dying breed, utterly reliant on… read more

Similar categories in Adrian Tchaikovsky's Service Model book and John Scalzi's Old Man's War (Old Man's War, #1)

  • science fiction fantasy
  • fiction
  • science fiction
  • fantasy
  • audiobook

17 Top fiction books like Old Man's War (Old Man's War, #1) by John Scalzi

Transform Your Habits

For We Are Many (Bobiverse, #2)

Ray Porter , Dennis E. Taylor

4.37

Transform Your Habits

We Are Legion (We Are Bob) (Bobiverse, #1)

Dennis E. Taylor

4.28

Transform Your Habits

All Systems Red (The Murderbot Diaries, #1)

Martha Wells

4.15

Transform Your Habits

The Three-Body Problem (Remembrance of Earth’s Past, #1)

Ken Liu , Liu Cixin

4.08

View all the books

28 must-read fiction books like Rendezvous with Rama (Rama, #1) by Arthur C. Clarke

Transform Your Habits

Neuromancer (Sprawl, #1)

William Gibson

3.89

Transform Your Habits

Red Mars (Mars Trilogy, #1)

Kim Stanley Robinson

3.86

Transform Your Habits

Solaris

Stanisław Lem

3.99

Transform Your Habits

The Caves of Steel (Robot, #1)

Isaac Asimov

4.19

View all the books

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