Seikai no Senki: Similar romance series

The Quantum Evolution

by Derek Künsken

4.11 · 46 ratings

space-opera · sci-fi · space · adult · audiobook · book · heist · hard-sci-fi · action-adventure · fiction · ai · genetic-engineering · cyberpunk · time-travel · male-author · first-contact · psychological · crime · futuristic · religion

All books in this series ❯

Cyborgs: More Than Machines

by Eve Langlais

4.00 · 118 ratings

romance · adult · military · sci-fi · aliens · fiction · action-adventure · cyborgs · genetic-engineering · paranormal · steamy · humor · futuristic · book · soldiers · space · suspense · cyberpunk · abuse · violent-conflict

All books in this series ❯

Indian Hill

by Mark Tufo

4.49 · 102 ratings

sci-fi · first-contact · adult · violent-conflict · aliens · fiction · post-apocalyptic · invasion · book · soldiers · military · space-travel · space-fleet · exploration · action-adventure · zombies · audiobook · space · colonization · space-opera

All books in this series ❯

Merkiaari Wars

by Mark E. Cooper

4.05 · 72 ratings

galactic-empire · space-travel · space-opera · soldiers · space-fleet · adult · genetic-engineering · space · violent-conflict · first-contact · audiobook · military · war · sci-fi · book · invasion · aliens · exploration · fiction · action-adventure

All books in this series ❯

Cade Korbin Chronicles

by Jasper T. Scott

4.35 · 35 ratings

aliens · exploration · fiction · industrial-era · steampunk · adult · space-fleet · historical · violent-conflict · first-contact · military · space-travel · soldiers · sci-fi · book · invasion · cyberpunk · space · genetic-engineering · galactic-empire

All books in this series ❯

Plague Wars

by David VanDyke

4.02 · 130 ratings

sci-fi · violent-conflict · adult · apocalyptic · fiction · post-apocalyptic · book · military · genetic-engineering · horror · action-adventure · aliens · invasion · first-contact · dystopia · technothriller · space-opera · war · epidemy · disaster

All books in this series ❯

Yesterday's Kin Trilogy

by Nancy Kress

3.57 · 53 ratings

invasion · genetic-engineering · aliens · fiction · hard-sci-fi · violent-conflict · adult · first-contact · sci-fi · book · post-apocalyptic · audiobook · female-author · space · female-mc · space-opera · alpha-mc · action-adventure · disaster · epidemy

All books in this series ❯

Star Trek: Deep Space Nine: Mission Gamma

by Heather Jarman

3.87 · 42 ratings

book · military · adult · aliens · fiction · action-adventure · genetic-engineering · violent-conflict · invasion · sci-fi · space-opera · contemporary · space

All books in this series ❯

Slip Runner

by J.N. Chaney

4.38 · 52 ratings

military · space-fleet · adult · violent-conflict · space · soldiers · galactic-empire · sci-fi · colonization · aliens · action-adventure · fiction · invasion · book · audiobook · genetic-engineering · space-opera · pulp · first-contact

All books in this series ❯

Invaders

by Vaughn Heppner

4.13 · 30 ratings

colonization · galactic-empire · action-adventure · aliens · exploration · fiction · invasion · book · drama · military · audiobook · space · genetic-engineering · adult · space-fleet · soldiers · violent-conflict · sci-fi · space-opera · space-travel

All books in this series ❯

Star Trek: Department of Temporal Investigations

by Christopher L. Bennett

3.99 · 45 ratings

space · adult · space-opera · fiction · sci-fi · action-adventure · time-travel · book · invasion · military · violent-conflict · aliens · genetic-engineering · first-contact · hard-sci-fi · dystopia · ai · travel · suspense · spirituality

All books in this series ❯

Aurora Rhapsody

by G.S. Jennsen

4.27 · 113 ratings

space-opera · space-travel · sci-fi · military · fiction · action-adventure · cyberpunk · colonization · space-fleet · violent-conflict · first-contact · exploration · galactic-empire · space · adult · aliens · book · soldiers · ai · invasion

All books in this series ❯

Star Trek: Picard

by James Swallow

4.00 · 40 ratings

adult · genetic-engineering · sci-fi · fiction · action-adventure · space · first-contact · violent-conflict · aliens · book · invasion · audiobook · military · space-opera · 21st-century · female-author · politics · box-set · comics · exploration

All books in this series ❯

Star Trek: Voyager: Dark Matters

by Christie Golden

3.86 · 22 ratings

adult · fiction · sci-fi · book · space-opera · action-adventure · aliens · genetic-engineering · space · military · violent-conflict · invasion · dark

All books in this series ❯