The Alpha Quadrant

by Enid Titan

3.71 · 7 ratings

adult · sci-fi · paranormal · aliens · fiction · book · violent-conflict · first-contact · invasion · romance · action-adventure · fantasy · psychics · steamy

The Alpha Quadrant: 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 ❯

Stolen by an Alien

by Amanda Milo

4.08 · 179 ratings

aliens · humor · sci-fi · steamy · fiction · adult · book · romance · paranormal · violent-conflict · first-contact · invasion · audiobook · space · alpha-mc · action-adventure · dark · kind-mc · kidnapping · friends-to-lovers

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 ❯

The Alliance

by S.E. Smith

4.12 · 120 ratings

aliens · fiction · romance · book · sci-fi · adult · paranormal · audiobook · post-apocalyptic · military · futuristic · action-adventure · dystopia · first-contact · violent-conflict · contemporary · invasion · space · steamy · space-travel

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 ❯

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 ❯

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 ❯

OtherWorldly Men

by Susan Grant

3.85 · 26 ratings

space-opera · female-mc · aliens · fiction · humor · futuristic · action-adventure · romance · book · first-contact · adult · alpha-mc · paranormal · sci-fi · invasion · contemporary · space · violent-conflict · assassins · political-intrigue

All books in this series ❯

Red Planet Dragons of Tajss

by Miranda Martin

4.22 · 280 ratings

fiction · adult · book · romance · paranormal · aliens · sci-fi · first-contact · dragons · action-adventure · violent-conflict · invasion · humor · steamy · genetic-engineering · female-mc · galactic-empire · new-adult · fantasy · colonization

All books in this series ❯

Darverius, House of DaR

by Jennifer Julie Miller

4.32 · 69 ratings

invasion · alpha-mc · aliens · fiction · adult · violent-conflict · book · first-contact · sci-fi · female-mc · romance · futuristic · steamy · paranormal · action-adventure · humor · fated-mates · kind-mc · vampires · kidnapping

All books in this series ❯

Savage Warriors

by Jude Gray

4.00 · 44 ratings

sci-fi · adult · aliens · fiction · paranormal · audiobook · romance · book · female-mc · space-travel · first-contact · violent-conflict · action-adventure · invasion · dark · steamy · futuristic · warriors · galactic-empire · alpha-mc

All books in this series ❯

Fated Mates of Adonia

by Ivy Sparks

4.00 · 22 ratings

adult · paranormal · sci-fi · aliens · fiction · female-mc · poc-mc · book · romance · first-contact · invasion · violent-conflict · action-adventure · fated-mates · space · alpha-mc · myths · new-adult · omegaverse · royalty

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 ❯

Mating Wars

by Aya Morningstar

3.90 · 41 ratings

genetic-engineering · adult · paranormal · aliens · fiction · book · romance · shapeshifters · forbidden-love · first-contact · violent-conflict · sci-fi · galactic-empire · action-adventure · invasion · dystopia · humor · steamy · fantasy · futuristic

All books in this series ❯

Vrisha Warriors

by Olivia Riley

4.19 · 26 ratings

adult · romance · book · slow-burn · action-adventure · aliens · sci-fi · fiction · paranormal · first-contact · invasion · colonization · enemies-to-lovers · multi-pov · space · forced-proximity · monsters · exploration · soldiers · dark

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 ❯

Galactic Pirate Brides

by Tamsin Ley

4.16 · 27 ratings

sci-fi · adult · aliens · fiction · action-adventure · paranormal · first-contact · futuristic · female-mc · outlaws · genetic-engineering · book · romance · violent-conflict · suspense · alpha-mc · invasion · military · galactic-empire · steamy

All books in this series ❯

Alien Abduction

by Zara Zenia

3.57 · 14 ratings

exploration · fiction · audiobook · genetic-engineering · invasion · romance · book · soldiers · sci-fi · space-travel · military · first-contact · violent-conflict · space-fleet · poc-mc · action-adventure · aliens · paranormal · adult · contemporary

All books in this series ❯

Intergalactic Alliance

by Bella Blair

4.33 · 55 ratings

book · romance · invasion · aliens · fiction · sci-fi · adult · violent-conflict · first-contact · galactic-empire · enemies-to-lovers · action-adventure · steamy · colonization · fated-mates · insta-love · paranormal · alpha-mc · shapeshifters · mermaids

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 ❯

Galaxy Games

by Ava Ross

4.38 · 13 ratings

book · adult · paranormal · galactic-empire · fiction · action-adventure · humor · first-contact · violent-conflict · sci-fi · colonization · aliens · invasion · romance · survival · space · suspense · space-opera · warriors · drama

All books in this series ❯

Alien Pirates of Cania

by Zara Zenia

4.00 · 11 ratings

adult · invasion · book · aliens · fiction · omegaverse · sci-fi · first-contact · violent-conflict · romance · action-adventure · exploration · paranormal · space-travel · military · space-fleet · gothic · female-mc · space

All books in this series ❯