Klagan Warriors
by Holly Hanzo
4.40 · 5 ratings
book · aliens · fiction · adult · invasion · romance · sci-fi · first-contact · violent-conflict · military · dystopia · steamy · warriors · fantasy · paranormal · action-adventure · holidays
Klagan Warriors: Similar series
Catteni
by Anne McCaffrey
3.96 · 124 ratings
adult · invasion · romance · violent-conflict · female-author · first-contact · space-opera · space-travel · sci-fi · aliens · fiction · action-adventure · futuristic · dystopia · space · audiobook · colonization · other-world · female-mc · survival
All books in this series ❯
Galactic Gladiators: House of Rone
by Anna Hackett
4.39 · 100 ratings
action-adventure · aliens · fiction · steamy · romance · adult · cyborgs · audiobook · sci-fi · paranormal · book · invasion · violent-conflict · first-contact · space · supernatural · military · warriors · alpha-mc · female-mc
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 ❯
First Salik War
by Jean Johnson
4.00 · 28 ratings
space · paranormal · book · invasion · adult · magic · romance · violent-conflict · first-contact · military · space-opera · sci-fi · fiction · aliens · action-adventure · female-mc · war · dystopia · cyberpunk · politics
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 ❯
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 ❯
Zandian Brides
by Renee Rose
4.21 · 66 ratings
aliens · fiction · sci-fi · adult · romance · steamy · book · paranormal · action-adventure · violent-conflict · first-contact · military · invasion · soldiers · polyamory · reverse-harem · dystopia · space · dark · slavery
All books in this series ❯
Veredian Chronicles
by Regine Abel
4.35 · 64 ratings
fiction · sci-fi · adult · paranormal · romance · book · action-adventure · aliens · humor · new-adult · soldiers · military · genetic-engineering · steamy · colonization · futuristic · invasion · reverse-harem · female-author · first-contact
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 ❯
Warlords Of Atera
by Celia Kyle
3.85 · 20 ratings
book · romance · adult · sci-fi · aliens · fiction · forced-proximity · audiobook · steamy · invasion · violent-conflict · space-fleet · military · first-contact · space-travel · new-adult · action-adventure · humor · exploration · fated-mates
All books in this series ❯
Cadi Warriors
by Stephanie West
4.11 · 45 ratings
alpha-mc · invasion · steamy · book · first-contact · adult · violent-conflict · sci-fi · aliens · fiction · romance · military · new-adult · action-adventure · paranormal · female-mc · futuristic · humor · war · supernatural
All books in this series ❯
Planet of Desire
by Robin Lovett
3.60 · 25 ratings
steamy · book · romance · paranormal · space · fated-mates · aliens · fiction · action-adventure · sci-fi · adult · military · invasion · forced-proximity · violent-conflict · first-contact · enemies-to-lovers · war · lgbtq · captivity
All books in this series ❯
Alien Warlord's Conquest
by Vi Voxley
4.19 · 37 ratings
action-adventure · aliens · fiction · military · adult · romance · sci-fi · book · steamy · insta-love · first-contact · alpha-mc · warriors · violent-conflict · invasion · paranormal · female-mc · space-fleet · fated-mates · futuristic
All books in this series ❯
Warlords of Aegir
by Luna Hunter
3.93 · 15 ratings
violent-conflict · adult · military · first-contact · paranormal · sci-fi · action-adventure · humor · aliens · female-mc · fiction · book · shapeshifters · invasion · royalty · kidnapping · romance · dark
All books in this series ❯
Unexpected
by Layla Stone
4.06 · 18 ratings
romance · book · paranormal · futuristic · aliens · fiction · sci-fi · adult · invasion · colonization · action-adventure · space-opera · first-contact · violent-conflict · kidnapping · steamy · abuse · galactic-empire · genetic-engineering · poc-mc
All books in this series ❯
Between Rebels
by Skye MacKinnon
3.92 · 12 ratings
invasion · romance · book · reverse-harem · aliens · fiction · sci-fi · paranormal · polyamory · first-contact · violent-conflict · adult · space-fleet · action-adventure · military · steamy · abuse · contemporary · space
All books in this series ❯
Alien Pirates of Cania
by Zara Zenia
4.00 · 11 ratings
fiction · omegaverse · aliens · book · invasion · adult · violent-conflict · first-contact · sci-fi · action-adventure · exploration · space-fleet · romance · military · space-travel · paranormal · female-mc · gothic · space
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 ❯
Cryo Crisis Homeworld
by Deiri Di
4.09 · 11 ratings
military · adult · sci-fi · action-adventure · fiction · romance · book · violent-conflict · paranormal · aliens · steamy · time-travel · first-contact · invasion · space-fleet · demons · galactic-empire · supernatural · poc-mc · colonization
All books in this series ❯
Prophecy
by Lea Kirk
3.80 · 10 ratings
fiction · invasion · aliens · book · first-contact · violent-conflict · adult · sci-fi · romance · action-adventure · futuristic · post-apocalyptic · military · space-opera · prophecy · apocalyptic · steamy · war · space · paranormal
All books in this series ❯
A New World
by M.D. Neu
4.14 · 7 ratings
lgbtq · book · invasion · fiction · aliens · mlm · sci-fi · adult · violent-conflict · first-contact · romance · politics · military · family · espionage · action-adventure · political-intrigue · paranormal · suspense · romantic-love
All books in this series ❯
Space Knights MC
by Zara Zenia
4.14 · 7 ratings
sci-fi · adult · violent-conflict · first-contact · military · book · romance · invasion · aliens · fiction · action-adventure · galactic-empire · poc-mc · space-travel · cheating · fantasy · domestic-drama · super-powered
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 ❯