Most Popular Adult Books of 2025

Discover popular Adult books published in 2025, with reader ratings and new favorites to explore.

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Books in this list

Alien Wolf Tales #1

Big, Bad Alien

Honey Phillips

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

January 23, 2025

10.0/10 1 ratings

Possessive Monsters

Abominable

Maggie Mayhem

Fantasy · Monster Romance · Paranormal Romance · Romantasy · Yeti

December 15, 2025

10.0/10 1 ratings

Xarc'n Warriors

Holly and the Hunter

Lynnea Lee

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

December 4, 2025

10.0/10 1 ratings

Treasured by the Alien #14

Baby for the Alien Warrior

Honey Phillips

Science Fiction · Alien Romance · Adult · Romance

November 16, 2025

10.0/10 1 ratings

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

10.0/10 1 ratings

Monsters and Mistletoe

Snowed In With the Ice Dragon

Vala Stone

Fantasy · Dragons · Monster Romance · Adult · Christmas Fiction

November 20, 2025

10.0/10 1 ratings

Horned Holidays #5

A Klaus Encounter

Honey Phillips

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

December 4, 2025

10.0/10 1 ratings

Gladiators of the Vagabond

Enticed by the Alien Chef

Robin O'Connor

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

September 16, 2025

10.0/10 1 ratings

Serpents of Serant #9

The Naga Scout's Daring Mate

Robin O'Connor

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

November 11, 2025

10.0/10 1 ratings

Vaxxlian Alien Mail Order Brides #8

Lorrd

Sue Mercury

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

September 25, 2025

10.0/10 1 ratings

Monster Mercenary Mates #7

Tempted by the Alien Mercenary

Robin O'Connor

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

December 9, 2025

10.0/10 1 ratings

OrcFire #8

Thankful for My Orc

Alana Khan

Fantasy · Science Fiction · Monster Romance · Orc · Romantasy

October 26, 2025

10.0/10 1 ratings

OrcFire #9

Orc The Halls

Alana Khan

Fantasy · Science Fiction · Monster Romance · Orc · Paranormal Romance

November 30, 2025

10.0/10 1 ratings

A Time To Series #1

A Time To Burn

Amy Lambton

Fantasy · Dark Fantasy · Romantasy · Adult · Romance

August 1, 2025

Alien Abduction #25

Yasmin and the Yeti

Honey Phillips

Science Fiction · Alien Romance · Yeti · Adult · Romance

August 7, 2025

10.0/10 1 ratings

Intergalactic Dating Agency

Romancing the Alien 10 Year Anniversary Bundle

Demelza Carlton, Kate Rudolph, Sophie Stern, Michelle M. Pillow, Skye MacKinnon, Sue Mercury, Candice Gilmer, Tamsin Ley, Elsa Jade

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

June 16, 2025

10.0/10 1 ratings

Harmony Glen

Hiss and Tell

Alana Khan

Fantasy · Cozy Fantasy · Gorgon · Monster Romance · Adult

September 5, 2025

10.0/10 1 ratings

Harmony Glen

Reptile Dysfunction

Alana Khan

Fantasy · Gorgon · Monster Romance · Adult · Romance

September 29, 2025

10.0/10 1 ratings

Harmony Glen

Horned to be Wild

Honey Phillips

Fantasy · Cozy Fantasy · Minotaur · Monster Romance · Adult

September 17, 2025

10.0/10 1 ratings

Filthy Fairy-Tales

Rose's Untamed Bear

Bella Blair

Fantasy · Fairy Tale Retellings · Adult · Retellings · Romance

October 29, 2025

10.0/10 1 ratings

Hillcrest Hollow Shifters #3

Bound to the Griffin

Vala Stone

Fantasy · Griffin · Paranormal Fantasy · Paranormal Romance · Adult

September 26, 2025

10.0/10 1 ratings

Treasured by the Alien #13

Legacy for the Alien Warrior

Honey Phillips

Science Fiction · Alien Romance · Adult · Romance

June 15, 2025

10.0/10 1 ratings

Monster Mercenary Mates #6

Chased by the Alien Mercenary

Robin O'Connor

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

August 12, 2025

10.0/10 1 ratings

Alien Wolf Tales #4

Cursed Alien

Honey Phillips

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

May 22, 2025

10.0/10 1 ratings

Dream Team Shifters #5

Her Enemy Dragon Captor

Leela Ash

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

April 14, 2025

10.0/10 1 ratings

The Five Kingdoms #4

The Orc's Princess Bride

Honey Phillips

Fantasy · Orc · Adult · Romance

July 24, 2025

10.0/10 1 ratings

Taurean Warriors

Mistletoe Mishaps

Melody Beckett

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

March 3, 2025

10.0/10 1 ratings

Serpents of Serant #8

The Naga Shaman's Pregnant Mate

Robin O'Connor

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

July 1, 2025

10.0/10 1 ratings

Monster Mercenary Mates #5

Saved by the Alien Mercenary

Robin O'Connor

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

April 29, 2025

10.0/10 1 ratings

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

10.0/10 1 ratings

Alien Wolf Tales #3

Alien Charming

Honey Phillips

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

April 24, 2025

10.0/10 1 ratings

Witches and Shifters: Scott Pack #5

His Fated Witch

Lucy Piper

Fantasy · Fated Mates · Paranormal Fantasy · Paranormal Romance · Romantasy

April 30, 2025

10.0/10 1 ratings

Fairhaven Falls #8

Kiss for My Kraken

Honey Phillips

Fantasy · Kraken · Monster Romance · Paranormal Fantasy · Paranormal Romance

October 2, 2025

10.0/10 1 ratings

The Exiled Chronicles #1

Sea of Exiles

Paige Annabentleah

Fantasy · Dark Fantasy · Demon · Elf · Fae

March 13, 2025