Most Popular Adult Books

The Black Phone and Other Stories

Joe Hill

Horror · Ghosts · Psychological Horror · Vampires · Adult

2005

Emily Voss #1

Past Mistakes

Nick Lavitz

Demon · Occult Detective · Paranormal Fantasy · Urban Fantasy · Young Adult

August 4, 2026

Royals and Romance #1

The Nightmare Before Kissmas

Sara Raasch

Fantasy · Adult · Christmas Fiction · Halloween Fiction · Holiday/Seasonal

October 8, 2024

Monster Mercenary Mates #1

Caught by the Alien Mercenary

Robin O'Connor

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

May 7, 2024

Hillcrest Hollow Shifters #4

Bound to the Vampire

Vala Stone

Fantasy · Paranormal Fantasy · Paranormal Romance · Vampires · Adult

January 9, 2026

Alien Wolf Tales #1

Big, Bad Alien

Honey Phillips

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

January 23, 2025

Mutant Mates #1

Mutant Mine

Venus Nox

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

October 14, 2024

Vaxxlian Alien Mail Order Brides #11

Draevan

Sue Mercury

Science Fiction · Alien Romance · HEA Ending · Adult · Romance

September 17, 2026

Starlight Alien Mail Order Brides #10

Rock Hard Alien

Skye MacKinnon

Science Fiction · Alien Romance · Gargoyle · HEA Ending · Monster Romance

September 3, 2026

Bred by the Beast

Annee Jones

Fantasy · Fairy Tale Retellings · Forced Proximity · HEA Ending · Monster Romance

August 13, 2026

Beauty and the Stone Beast

Lisa Carlisle

Fantasy · Enemies To Lovers · Fairy Tale Retellings · Gargoyle · Monster Romance

July 7, 2026

Sunshine Valley Orcs #1

The Orc's Protection

Alana Khan

Fantasy · Science Fiction · Monster Romance · Orc · Romantasy

June 28, 2026

Chains of Solitude #1

A Shattered Peace

Tesone Gabriel

Fantasy · Dark Fantasy · Epic Fantasy · High Fantasy · New Adult

March 6, 2026

Serpents of Serant #11

The Naga Wanderer's Wounded Mate

Robin O'Connor

Science Fiction · Alien Romance · Fated Mates · HEA Ending · Monster Romance

August 18, 2026

Alien Wolf Tales #8

Alien Tower

Honey Phillips

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

April 9, 2026

Sci-Fi Holiday Specials

The Alien Warrior's Valentine

Robin O'Connor

Science Fiction · Alien Romance · Adult · Valentine's Day Fiction · Holiday/Seasonal

February 14, 2026

Possessive Monsters #12

Dragon Me Crazy

Maggie Mayhem

Fantasy · Dragons · Fated Mates · Monster Romance · Paranormal Romance

August 6, 2026

The ABCs of Alien Abduction #1

A is for Abduction

Honey Phillips

Science Fiction · Alien Romance · HEA Ending · Adult · Adventure

July 2, 2026

Wrong Move, Right Monster #2

Never Text a Minotaur

Honey Phillips

Fantasy · Cozy Fantasy · Minotaur · Monster Romance · Adult

March 22, 2026

Alien Wolf Tales #6

Alien's Bargain

Honey Phillips

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

February 12, 2026

Serpents of Serant #10

The Naga Exile's Frozen Mate

Robin O'Connor

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

February 24, 2026

Holiday Heartmates #6

Stuffed by the Alien

Julie K. Cohen

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

October 15, 2026

Fairhaven Falls #10

Brownies for My Grumpy Bunny

Honey Phillips

Fantasy · Monster Romance · Paranormal Fantasy · Paranormal Romance · Adult

February 22, 2026

Monster Mercenary Mates #8

Claimed by the Alien Mercenary

Robin O'Connor

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

January 27, 2026

Monster Mate Mayhem

Hot Wolf in the Country

Honey Phillips

Fantasy · Cozy Fantasy · Monster Romance · Paranormal Fantasy · Paranormal Romance

January 1, 2026

Harmony Glen

Satyrday Night Fever

Honey Phillips

Fantasy · Cozy Fantasy · Monster Romance · Satyr · Adult

May 13, 2026

Xarc'n Warriors #14

Chosen by the Hunter

Lynnea Lee

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

March 19, 2026

Possessive Monsters

Abominable

Maggie Mayhem

Fantasy · Monster Romance · Paranormal Romance · Romantasy · Yeti

December 15, 2025

Xarc'n Warriors

Holly and the Hunter

Lynnea Lee

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

December 4, 2025

Treasured by the Alien #14

Baby for the Alien Warrior

Honey Phillips

Science Fiction · Alien Romance · Adult · Romance

November 16, 2025

Love Spells & Holiday Hell #1

Hexed by You

Reina Everhart

Fantasy · Paranormal Fantasy · Paranormal Romance · Witches · Adult

September 10, 2025

Forbidden Alpha Kings #41

Lycan King’s Secret Baby

Vera Fae, Lira Flux

Fantasy · Fated Mates · Omegaverse · Paranormal Fantasy · Paranormal Romance

June 26, 2025

Fairhaven Falls #9

Healed by My Hyde

Honey Phillips

Fantasy · Monster Romance · Paranormal Fantasy · Paranormal Romance · Adult

November 6, 2025

Monsters and Mistletoe

Snowed In With the Ice Dragon

Vala Stone

Fantasy · Dragons · Monster Romance · Adult · Christmas Fiction

November 20, 2025

Horned Holidays #5

A Klaus Encounter

Honey Phillips

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

December 4, 2025

Gladiators of the Vagabond

Enticed by the Alien Chef

Robin O'Connor

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

September 16, 2025