Top 21 Mature Adventure Fanfics
Ranked by AO3 kudos. Every fic on this list is tagged with adventure and rated Mature.
Too old to be this young
by Nadia_Castillo
He was smiling. At Tom Riddle. He was going to get murdered before the year ends, he just knows.Alternate universe/Post-Hogwarts. warnings: mature themes, drinking, swearing. An adult Harry Potter with all his knowledge and experience is transported to his 23yo body in a universe with no war.
Practicing Liars
by Lomonaaeren
AU of HBP. Harry found out that he was Snape's son two years ago, and he's carefully concealed it. But now Snape is his Defense teacher, and Draco Malfoy is up to something, and Dumbledore is dying, and the final battle is coming up, and everything is getting very, very complicated.
Deepest desire
by Tirainy
Dr. Eggman invented a serum that will make the injected person act upon their deepest desire. He believed that Shadow's was to kill Sonic. Boy, how wrong he was...
Through Sand And Sea
by Looktotheedges
It's been seven years since the war, five years since Hermione and Ron broke up, and...oh dear Merlin, two years since Hermione went on a date.But it's fine. She has friends. She has her work.Very complicated work that keeps her late in the office one Friday night. That takes her down to the Departm
Percy Take the Wheel
by KittySmith
A freak accident with Arthur's enchanted Ford Anglia causes a minor explosion and a major change in the Weasley household. With Arthur in a coma and Molly having passed away, Bill and Charlie can't afford to quit their jobs and must support the family from afar. Thus, it falls to Percy to handle the
Pirate Heroes
by The_Mad_Mystic
Izuku Midoriya dies after the fight from Overhaul, successfully saving Eri. Before he passes on, something gives him an offer. A new world to explore, a goal, and friends both old and new await him. The good news, the pirates he ends up joining are good people. The bad news, they are probably as cra
Gods and Monsters
by reaperlight
It was not his intention to bring an innocent into his war with L. But then he couldn’t in good conscience leave him there to be returned to the cupboard under the stairs. Ryuk chuckled and clapped him on the back. “Happy Father’s Day. I’m sure Misa will be thrilled.”
Grotesquerie
by tempus_teapot
When Xenon says don't touch, Do Not Touch. After an accident in the Black Emporium leaves Anders and Fenris chained together like thieves, they must find a way out of their situation. They must go farther than they ever expected - all the way into Anders' past.
Tov
by Trying_to_do_good
A soul from Earth is rescued by the Emperor and makes a deal to help defeat the Absolute in order to find out why they had been brought to this new universe. In exchange, they are given a new body and a chance to influence the game that they had once played in their past life.This story sticks close
Karma
by ghuune
I know writing stories where Spike survives is considered dirty pool, but this is just an experiment. "Karma" is a series of vignettes exploring the relationships between Spike, Faye, and Jet now that they're alone on the Bebop. I'm writing this for my own joy and mean no disrespect to anyone else's
Minecraft: The Fallen
by JustMC
Follow Steve's epic journey through a not-so-average world, and watch as he gets entangled in a prophecy concerning the fate of the land and his lost memories. Contains many references to the game's history, familiar moments and characters, as well as cut content.
Mother Knows Best
by TheLivingMyth
Long before the Citadel Council, before the Protheans, even before the mysterious Inusannon, the galaxy was not silent. An ancient, ferocious race emerged - not by chance, but by necessity. Born from the will of nature itself, they were forged to challenge an enemy that had disrupted the natural cyc
The Boogeyman
by dagaberto
While individually they are the best ones around, what kind of force needs to be there to make Yor and Twilight work together and for what goals ?A story with an OC I’ve been cooking on my mind for a while, there will be some gore and some fluff (as much as I can manage tbh.) and a happy ending. I k
Entwined
by WaterbirdGee
~ Jongin kidnapped Prince Kyungsoo, and together they embarked on an adventurous journey~
The Tale of the Akatsuki
by AlonditeOfDawn
Deidara's life is suddenly turned upside-down when he is captured by the fearsome pirates of the Akatsuki. Forced to join their ranks, he will do anything he can to escape; that is, until a chance, mystery encounter aboard the ship's decks... So ensues a journey of adventure, mysteries and lost trea
Cognitio
by AlastairGarvin
Scorpius Malfoy has been told his whole life that the war is over. He doesn't believe it. The whispers follow him everywhere—the corridors of Hogwarts, the pages of the Daily Prophet, the Ministry registry where the names of Death Eaters and their children are kept. His father made choices. His fath
The Illusion of Truth
by WinterPaladin
Part II: Learning CurveFar away from the Capital Wasteland, Malcolm begins a new journey in the heart of the Enclave. With opportunities far beyond what Malcolm would have ever had back in Vault 101, he is hopeful he can find his purpose on the surface world he now calls home. As Malcolm advances hi
The Devil’s Temptress: Under No Man’s Flag
by HouseOfFlies
After ten years, Nicolette Barker is finally free. Not only that, but somehow, she once again finds herself sailing alongside Captain Jack Sparrow. Memories she had thought long buried return with him—echoes of who she once was, and who she might have been. With them comes a dangerous belief: that s
Diplomatic Unions
by Fanauthor206
Naruto and Hinata have just gotten married. Kakashi then approaches Naruto with a special mission, that will ensure permanent alliance with The Hidden Mist Village. An arranged marriage between a member of each village. Naruto is then surprised to discover the person seeking a spouse is Mei Terumi t
Widows on Titan
by delilah_fields
Natasha Romanoff and Yelena Belova had no choices, doing work for a general that controlled their minds, not knowing freedom. But when a murder doesn't go as planned what happens when you deflect? When you discover a purpose for fighting? What happens when two skilled arrivals join the Scouts? One c
Baldur's Gate: The Echoes We Keep (AstarionXTav)
by Star_Anon45
⚠️ Content Warning: Graphic content, strong language, mature sexual content, and themes of racism, abuse, and trauma.*Also, spoilers for the game!!!* Captured. Changed. Forgotten.Elsabeth Spyros has been aboard the Nautiloid longer than the others-long enough to lose pieces of herself. A Half-Drow c
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About This List
This list of 21mature Adventure fanfics spans 2,736,349 total words. Kudos range from 9 on the newest entries to 21,865 on the most established. Most entries are ongoing works, so subscribe on AO3 for update notifications. The most common rating is Mature (21 of 21 fics).
Recurring tags across this list: Adventure · Romance · Action · Angst · Adventure & Romance.
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