Most Popular Hard Science Fiction Books of the 2020s
Discover popular Hard Science Fiction books from the 2020s, with reader ratings and new favorites to explore.
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Books in this list
The Nibelung series #2
Wolfpack Hunt
Science Fiction · Hard Science Fiction
September 29, 2026
Undying Mercenaries #25
Hell World
Science Fiction · Hard Science Fiction · Space Opera
March 28, 2026
Rich Man's Sky #4
Thieves' Sky
Science Fiction · Hard Science Fiction
July 7, 2026
Galaxy Raiders #1
Abyss
Science Fiction · Hard Science Fiction · Military Science Fiction · Space Opera
February 4, 2025
Esperance
Science Fiction · Hard Science Fiction · Thriller
May 20, 2025
Beyond and Within
Creative Futures
Science Fiction · Hard Science Fiction · Social Science Fiction · Anthology · Short Stories
November 11, 2025
Kallipolis Series #1
2525: Gardens and Creeks
Science Fiction · Hard Science Fiction
September 5, 2025
The Nibelung series #1
Space Raider Nibelung
Science Fiction · Hard Science Fiction
September 20, 2025
Epic of Atlantis #2
Echoes of Deceit
Science Fiction · Hard Science Fiction
December 1, 2025
Undying Mercenaries #23
Rage World
Science Fiction · Hard Science Fiction · Space Opera
March 8, 2025
The Betaverse #3
A New War
Science Fiction · Hard Science Fiction
January 14, 2025
Undying Mercenaries #22
Rebel World
Science Fiction · Hard Science Fiction · Space Opera
November 21, 2024
The Betaverse #2
A New God
Science Fiction · Hard Science Fiction
March 5, 2024
Dark Nova #3
The Fifth Kind: Ascension
Science Fiction · Hard Science Fiction
July 15, 2024
The Icarus Series #3
The Icarus Job
Science Fiction · Hard Science Fiction · Space Opera
March 5, 2024
Rich Man's Sky #3
Beggar's Sky
Science Fiction · Hard Science Fiction
February 6, 2024
Bionic Frontier #1
The Moon and the Desert
Science Fiction · Hard Science Fiction
March 7, 2023
The Diving Series #18
Ivory Trees
Science Fiction · Hard Science Fiction · Space Opera
November 14, 2023
The Diving Series #13
The Court-Martial of the Renegat Renegades
Science Fiction · Hard Science Fiction · Space Opera
June 6, 2023
The Betaverse #1
A New Eden
Science Fiction · Hard Science Fiction
July 25, 2023
Dark Nova #2
The Fifth Kind: Awakening
Science Fiction · Hard Science Fiction
December 17, 2023
Dark Nova #1
The Fifth Kind: Arrival
Science Fiction · Hard Science Fiction
June 14, 2023
Caine Riordan #7
Protected Species
Science Fiction · Hard Science Fiction · Military Science Fiction · Space Opera
December 5, 2023
Ballistic #1
Ballistic
Science Fiction · Hard Science Fiction · Thriller
August 2, 2022
Inverted Frontier #3
Needle
Science Fiction · Hard Science Fiction · Space Opera
July 12, 2022
The Diving Series #17
Maelstrom
Science Fiction · Hard Science Fiction · Space Opera
March 23, 2021
The Diving Series #16
The Chase
Science Fiction · Hard Science Fiction · Space Opera
September 27, 2021
The Diving Series #14
Thieves
Science Fiction · Hard Science Fiction · Space Opera
February 16, 2021
The Axiom
The Alien Stars and Other Novellas
Science Fiction · Hard Science Fiction · Short Stories
April 13, 2021
The Diving Series #15
Squishy's Teams
Science Fiction · Hard Science Fiction · Space Opera
November 17, 2020
The Diving Series #12
Escaping Amnthra
Science Fiction · Hard Science Fiction · Space Opera
March 5, 2020
Wine Dark Deep #3
The Odyssey
Science Fiction · Hard Science Fiction · Space Opera
October 12, 2020
Wine Dark Deep #2
Encounter at Jupiter
Science Fiction · Hard Science Fiction · Space Opera
October 12, 2020
Wine Dark Deep #1
Wine Dark Deep
Science Fiction · Hard Science Fiction · Space Opera
October 12, 2020