Most Popular Alien Romance Books of 2025

Marked By The Nyari #4

Stolen By The Celestial Thief

Nova Sloane

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

October 15, 2025

Marked By The Nyari #3

Burned By The Lightforged

Nova Sloane

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

October 7, 2025

Mated To The Moltherra #5

Claimed By The Ashborn King

Nova Sloane

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

September 9, 2025

Mated To The Moltherra #3

Claimed By The Stone Guardian

Nova Sloane

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

August 26, 2025

Marked By The Nyari #1

Drawn To The Astral Warden

Nova Sloane

Science Fiction · Alien Romance · Fated Mates · Slow Burn Romance · Romance

September 25, 2025

Marked By The Nyari #2

Entangled With The Falling Star

Nova Sloane

Science Fiction · Alien Romance · Fated Mates · Romance

September 30, 2025

Taken By The Void

Lena Everhart

Science Fiction · Alien Romance · Adult · Dark Romance · Dark Fiction

March 9, 2025

The Alien Breeding Program #2

Prince's Breeder

Freya Frost

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

October 23, 2025

The Alien Breeding Program #1

Warlord's Breeder

Freya Frost

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

October 9, 2025

Escape to Haven County

Warrior's Honor

Olivia Sinclair

Science Fiction · Alien Romance · Instalove Romance · Adult · Short Stories

October 10, 2025

Cosmic Threads of Fate #1

Across the Stars

Tera Nova

Science Fiction · Alien Romance · Slow Burn Romance · Romance

October 3, 2025

Asemsa #2

Grumpy Alien Lumberjack

Liz Paffel

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

October 17, 2025

Mated to the Monster God

Athena Storm, Cara Stone

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

September 25, 2025

Fated in A Time of War

Athena Storm

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

September 25, 2025

Protected by Her Alien Billionaire Daddy

Tara Starr, Athena Storm

Science Fiction · Alien Romance · Adult · Romance

September 25, 2025

You've Got Alien Mail #3

Return to Sender

Lara Roth

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

October 27, 2025

Monsters and Mistletoe

Snowed In With Jack Frost

Lara Roth

Science Fiction · Alien Romance · Christmas Fiction · Novella · Winter Fiction

November 11, 2025

Cosmic Connections Cruise #1

Hijack! Cosmic Connections Cruise

Elsa Jade

Science Fiction · Alien Romance · Romance

September 22, 2025

Consumed by the Alien Heat #3

Silvyr

Zoey Indiana

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

November 6, 2025

Consumed by the Alien Heat #2

Kazmyr

Zoey Indiana

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

October 6, 2025

Consumed by the Alien Heat #1

Vylit

Zoey Indiana

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

September 10, 2025

Arixxia Fields: A Steamy Small-Town Alien Romance

Jorax

Alana Khan

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

October 5, 2025

Alien Warrior Chef…With Benefits

Athena Storm

Science Fiction · Alien Romance · Adult · Romance

September 18, 2025

Mothership #2

Alien Blueprint

Eden Ember

Science Fiction · Alien Romance · Adult · Romance

December 26, 2025

Mothership #1

Alien Home

Eden Ember

Science Fiction · Alien Romance · Adult · Romance

December 18, 2025

Alien Prince's Bride

Freya Frost

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

December 15, 2025

I Come in Peace

Give Peace a Chance

Amelia Elliot

Science Fiction · Alien Romance · Fated Mates · Slow Burn Romance · Adult

September 1, 2025

Mated & Afraid #1

Alien Jeopardy

January Bell

Science Fiction · Alien Romance · Adult · Romance

August 31, 2025

Galaxy Alien Mail Order Brides #9

Lunar Bound

Michelle M. Pillow

Science Fiction · Alien Romance · Romance

October 14, 2025

Vinduthi Stolen Brides #2

Alien Devil's Wrath

Ava York

Science Fiction · Alien Romance · Adult · Romance

September 24, 2025

Vinduthi Stolen Brides #1

Alien Devil's Prey

Ava York

Science Fiction · Alien Romance · Slow Burn Romance · Adult · Romance

August 27, 2025

You've Got Alien Mail #2

Alien Attachment

Lara Roth

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

October 1, 2025

You've Got Alien Mail #1

Signed, Sealed, Seduced

Lara Roth

Science Fiction · Alien Romance · Adult · Romance

September 1, 2025

Felix Orbus Galaxy #5

Saved by the Servali

S.C. Principale

Science Fiction · Alien Romance · Adult · Romance

February 8, 2025

Felix Orbus Galaxy #6

Healing the Leonid Doctor's Heart

S.C. Principale

Science Fiction · Alien Romance · Adult · Romance

August 2, 2025

Soldiers of the Ardannan #3

COLVIN

Veronica Scott

Science Fiction · Alien Romance · Fated Mates · Novella · Romance

November 10, 2025