Most Popular Alien Romance Books of the 2020s

Monster Mercenary Mates #5

Saved by the Alien Mercenary

Robin O'Connor

Science Fiction · Alien Romance · Fated Mates · Monster Romance · Adult

April 29, 2025

Abducted by the Ruthless Royal: Planet Sanos

Taken by the Alien Triton King

Robin O'Connor

Fantasy · Science Fiction · Alien Romance · Fated Mates · Post-Apocalyptic

June 4, 2025

Alien Wolf Tales #3

Alien Charming

Honey Phillips

Science Fiction · Alien Romance · Fairy Tale Retellings · Adult · Retellings

April 24, 2025

Alien Wolf Tales #2

Alien Huntsman

Honey Phillips

Science Fiction · Alien Romance · Fairy Tale Retellings · Monster Romance · Adult

March 20, 2025

Monster Mercenary Mates #4

Entangled by the Alien Mercenary

Robin O'Connor

Science Fiction · Alien Romance · Monster Romance · Adult · Romance

March 11, 2025

Serpents of Serant #7

The Naga Princess's Soldier Mate

Robin O'Connor

Science Fiction · Alien Romance · Monster Romance · Naga · Adult

January 14, 2025

Fated Mates of the Ferlaern Warriors #1

Enticed by an Alien Warlord

Ava Ross

Science Fiction · Alien Romance · Adult · Romance

January 8, 2024

Romance Collections Limited Editions #14

Beyond Earth

Robin O'Connor, Leslie Chase, Stephanie Morris, Alina Riley, Candice Gilmer, Lola Blix, Celia Breslin, Sky Robert

Science Fiction · Alien Romance · Dragons · Vampires · Werewolves

December 11, 2024

Monster Mercenary Mates #3

Betrothed to the Alien Mercenary

Robin O'Connor

Science Fiction · Alien Romance · Monster Romance · Adult · Romance

December 10, 2024

Forbidden Bonds

Forbidden Bonds Collection Two

Cara Bristol

Science Fiction · Alien Romance · Adult · Collection · Romance

November 4, 2024

Forbidden Bonds

Forbidden Bonds Collection One

Cara Bristol

Science Fiction · Alien Romance · Adult · Collection · Romance

November 4, 2024

At The Alien Hotel #3

Oh No, I Shot A Spaceship And Kissed An Alien Cyberchef

Kate Sinner

Science Fiction · Alien Romance · Short Stories · Romance

October 3, 2024

Dragon Brides #10

Pine

Kate Rudolph

Fantasy · Science Fiction · Alien Romance · Dragons · Fated Mates

November 5, 2024

Rescued by the Alien

Rudi

Honey Phillips

Science Fiction · Alien Romance · Adult · Christmas Fiction · Holiday/Seasonal

November 8, 2024

The Klendathian Cycle #1

Kidnapped by the Alien Chieftain

Lara Roth

Science Fiction · Alien Romance · Space Opera · Romance

September 25, 2024

Serpents of Serant #6

The Naga Inventor's Clever Mate

Robin O'Connor

Science Fiction · Alien Romance · Monster Romance · Naga · Adult

October 22, 2024

Alien Abduction #23

Willow and the Wraith

Honey Phillips

Science Fiction · Alien Romance · Adult · Romance

August 22, 2024

Back Away From My Girl

Guarded by an Alien Assassin

Honey Phillips

Science Fiction · Alien Romance · Romance

October 28, 2024

Holiday Heartmates #4

Haunted by the Alien

Julie K. Cohen

Science Fiction · Alien Romance · Halloween Fiction · Holiday/Seasonal · Romance

September 19, 2024

Serpents of Serant #3

The Naga Warlord's Virgin Mate

Robin O'Connor

Science Fiction · Alien Romance · Naga · Adventure · Romance

May 9, 2024

Serpents of Serant #4

The Naga Maverick's Determined Mate

Robin O'Connor

Science Fiction · Alien Romance · Naga · Adventure · Romance

May 9, 2024

Serpents of Serant #5

The Naga Scavenger's Precious Mate

Robin O'Connor

Science Fiction · Alien Romance · Naga · Adventure · Romance

June 18, 2024

Starlight Brides

Alien Triton's Prize

Lynnea Lee

Science Fiction · Alien Romance · Mermaid · Monster Romance · Paranormal Romance

September 12, 2024

At The Alien Hotel #2

Oh No, I Stole An Alien Furball And Kissed A Beastmaster

Kate Sinner

Science Fiction · Alien Romance · Romance

August 14, 2024

An Alien Mate For Christmas

Melody Beckett

Science Fiction · Alien Romance · Christmas Fiction · Holiday/Seasonal · Romance

July 23, 2024

Horned Holidays #4

The Knotty Clause

Honey Phillips

Science Fiction · Alien Romance · Holiday/Seasonal · Romance

December 5, 2024

Alien Abduction #22

Vera and the Victor

Honey Phillips

Science Fiction · Alien Romance · Gargoyle · Adult · Romance

July 25, 2024

Alien Abduction #21

Unity and the Usurper

Honey Phillips

Science Fiction · Alien Romance · Adult · Romance

June 27, 2024

How the Aliens Were Won #8

Tomlin

Honey Phillips

Science Fiction · Alien Romance · Romance · Western

September 26, 2024

Treasured by the Alien #12

Hope for the Alien Warrior

Honey Phillips

Science Fiction · Alien Romance · Adult · Romance

November 24, 2024

My Monster, My Protector

Protected By The Alien Bodyguard

Kate Sinner

Science Fiction · Alien Romance · Romance

May 24, 2024

Monster Mercenary Mates #2

Stolen by the Alien Mercenary

Robin O'Connor

Science Fiction · Alien Romance · Monster Romance · Adult · Romance

August 13, 2024

Xarc'n Warriors #11

Craved by the Hunter

Lynnea Lee

Science Fiction · Alien Romance · Dystopia · Post-Apocalyptic · Romance

January 4, 2024

Fated Mates of the Zaarn #2

Taken by the Alien Rogue

Krista Luna

Science Fiction · Alien Romance · Romance

March 30, 2023

Seven Brides for Seven Alien Brothers #5

Endark

Honey Phillips

Science Fiction · Alien Romance · Shapeshifters · Winter Fiction · Romance

January 5, 2023

Seven Brides for Seven Alien Brothers #7

You Got Alien Trouble!

Honey Phillips

Science Fiction · Alien Romance · Romance

May 21, 2023