Galactic Union
by Lucee Joie
3.75 · 4 ratings
first-contact · violent-conflict · adult · aliens · fiction · invasion · sci-fi · book · galactic-empire · space · romance · sexual-assault
Galactic Union: Similar series
In Her Name: Redemption
by Michael R. Hicks
4.18 · 73 ratings
invasion · romance · galactic-empire · space · action-adventure · aliens · fiction · space-opera · sci-fi · violent-conflict · military · first-contact · book · dystopia · war · adult · post-apocalyptic · futuristic · warriors · space-travel
All books in this series ❯
Captured by Aliens
by A.G. Wilde
4.03 · 77 ratings
fiction · aliens · action-adventure · female-mc · adult · first-contact · sci-fi · book · steamy · romance · paranormal · dark · kidnapping · alpha-mc · galactic-empire · humor · poc-mc · slow-burn · violent-conflict · invasion
All books in this series ❯
In Her Name
by Michael R. Hicks
4.23 · 161 ratings
military · violent-conflict · sci-fi · space-opera · aliens · fiction · space · galactic-empire · first-contact · adult · invasion · book · action-adventure · war · epic · space-travel · warriors · dystopia · romance · post-apocalyptic
All books in this series ❯
Raider Warlords of the Vandar
by Tana Stone
4.30 · 142 ratings
book · adult · sci-fi · aliens · fiction · galactic-empire · romance · steamy · first-contact · female-mc · action-adventure · space · invasion · violent-conflict · humor · paranormal · new-adult · alpha-mc · audiobook · fighter
All books in this series ❯
Aurora Rising
by G.S. Jennsen
4.13 · 66 ratings
sci-fi · space-travel · space-opera · first-contact · military · fiction · action-adventure · galactic-empire · cyberpunk · colonization · space-fleet · violent-conflict · aliens · exploration · ai · space · romance · book · soldiers · adult
All books in this series ❯
Dark World Mates
by Olivia Riley
3.97 · 60 ratings
aliens · fiction · adult · sci-fi · book · romance · action-adventure · female-mc · violent-conflict · first-contact · invasion · alpha-mc · slow-burn · military · space · suspense · paranormal · prison · monsters · space-opera
All books in this series ❯
Shamans & Shifters Space Opera
by Jenny Schwartz
4.33 · 46 ratings
romance · shapeshifters · book · paranormal · space · aliens · fiction · action-adventure · sci-fi · space-travel · space-opera · first-contact · adult · futuristic · outlaws · space-fleet · magic · fae · colonization · galactic-empire
All books in this series ❯
Outer Limits Quadrant
by Alexis B. Osborne
4.02 · 27 ratings
paranormal · romance · steamy · book · military · adult · sci-fi · action-adventure · aliens · fiction · monsters · space · genetic-engineering · galactic-empire · invasion · first-contact · violent-conflict · soldiers · dark · space-travel
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
by Susan Grant
3.97 · 69 ratings
romance · paranormal · aliens · fiction · sci-fi · adult · futuristic · book · action-adventure · steamy · galactic-empire · female-mc · space-opera · invasion · space · violent-conflict · first-contact · royalty · time-travel · anthologies
All books in this series ❯
The Ravager Chronicles
by Sara Page
3.86 · 42 ratings
polyamory · steamy · adult · sci-fi · aliens · fiction · paranormal · romance · book · reverse-harem · space-opera · poc-mc · action-adventure · space · military · fated-mates · royalty · first-contact · violent-conflict · space-fleet
All books in this series ❯
Chosen by the Karal
by Harmony Raines
3.90 · 50 ratings
space-travel · sci-fi · adult · violent-conflict · first-contact · aliens · exploration · fiction · galactic-empire · paranormal · genetic-engineering · book · invasion · romance · colonization · futuristic · dystopia · contemporary · steamy · space
All books in this series ❯
Warriors of Karal
by Harmony Raines
4.18 · 38 ratings
violent-conflict · adult · contemporary · first-contact · space-travel · galactic-empire · sci-fi · paranormal · action-adventure · aliens · exploration · colonization · fiction · book · steamy · invasion · romance · genetic-engineering · dystopia · warriors
All books in this series ❯
Aurora Renegades
by G.S. Jennsen
4.46 · 28 ratings
action-adventure · aliens · exploration · fiction · military · first-contact · violent-conflict · space-fleet · adult · soldiers · sci-fi · space-travel · space-opera · colonization · invasion · book · audiobook · space · cyberpunk · utopia
All books in this series ❯
Amaranthe
by G.S. Jennsen
4.32 · 122 ratings
cyberpunk · colonization · space-opera · sci-fi · violent-conflict · first-contact · military · aliens · fiction · galactic-empire · invasion · space-travel · space-fleet · exploration · action-adventure · space · adult · soldiers · book · genetic-engineering
All books in this series ❯
Galaxy Sanctuary
by Alana Khan
4.38 · 26 ratings
book · aliens · action-adventure · fiction · female-mc · galactic-empire · paranormal · sci-fi · adult · space · first-contact · invasion · colonization · violent-conflict · romance · slavery · alpha-mc · forced-proximity
All books in this series ❯
Asterion Noir
by G.S. Jennsen
4.39 · 18 ratings
cyberpunk · genetic-engineering · space · audiobook · galactic-empire · politics · suspense · colonization · book · technothriller · invasion · romance · space-fleet · adult · violent-conflict · first-contact · horror · military · space-travel · space-opera
All books in this series ❯
Crashland Castaway
by Leslie Chase
4.21 · 14 ratings
violent-conflict · adult · first-contact · galactic-empire · sci-fi · paranormal · aliens · fiction · colonization · book · invasion · romance · space · futuristic · alpha-mc · contemporary · ai · female-mc
All books in this series ❯
Alpha Alien
by Flora Dare
3.37 · 19 ratings
fiction · romance · steamy · sci-fi · adult · aliens · paranormal · contemporary · inter-galactic · book · space · humor · galactic-empire · exploration · genetic-engineering · invasion · colonization · soldiers · space-travel · first-contact
All books in this series ❯
Talonian Warriors
by Celeste Raye
4.19 · 16 ratings
aliens · fiction · colonization · invasion · genetic-engineering · adult · cyberpunk · military · space-fleet · first-contact · violent-conflict · galactic-empire · soldiers · book · paranormal · action-adventure · shapeshifters · romance · sci-fi · space
All books in this series ❯
Fated Mates of Halia
by Alaska Jones
4.33 · 9 ratings
violent-conflict · space-fleet · space · military · first-contact · space-travel · adult · galactic-empire · sci-fi · exploration · aliens · colonization · fiction · book · invasion · romance · captivity · forced-proximity · multi-pov · abuse
All books in this series ❯
Galactic Vikings
by Lucee Joie
4.16 · 19 ratings
book · invasion · aliens · fiction · humor · galactic-empire · sci-fi · adult · violent-conflict · first-contact · post-apocalyptic · romance · futuristic · space · paranormal · scandinavia · europe · medieval · box-set · historical
All books in this series ❯
Galactic Alpha's Conquest
by Stella Cassy
3.92 · 13 ratings
sci-fi · adult · aliens · fiction · paranormal · shapeshifters · book · space-travel · space-fleet · violent-conflict · first-contact · military · poc-mc · galactic-empire · invasion · space · romance · dragons · fantasy · abuse
All books in this series ❯
Galactic Union
by Lucee Joie
3.75 · 4 ratings
first-contact · violent-conflict · adult · aliens · fiction · invasion · sci-fi · book · galactic-empire · space · romance · sexual-assault
All books in this series ❯