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Shady Tale: The Beginning by ShadyNexus
Frisk is a 18 year-old young man who just graduated high school. He arranges a hiking trip with his best friend Jack, which leads to him falling in a mysterious hole. Can Frisk survive the monster realm?
Rated: T - English - Fantasy/Supernatural - Chapters: 9 - Words: 21,242 - Favs: 3 - Follows: 3 - Updated: 3h - Published: 5/27 - Frisk, Toriel, Flowey
Flapper Florist (Mafiatale) by Michkate reviews
En la peligrosa ciudad de Ebott, radica una guerra campal entre mafias a causa de la inconformidad de habitar monstruos y humanos en un mismo lugar. Sin importarle las advertencias de su madre, Frisk decide ir a la ciudad y cumplir su sueño de tener su florería junto con su compañero y amigo Flowey. ¿Cómo fue que una simple florista terminó involucrada en esta guerra?
Rated: T - Spanish - Crime/Romance - Chapters: 68 - Words: 532,649 - Reviews: 129 - Favs: 72 - Follows: 70 - Updated: 14h - Published: 2/10/2017 - Frisk, Papyrus, Sans, Gaster
Alyssa's Tale by smartrobert00 reviews
After Sans and Papyrus discover a new skeleton child that seemed to appear in Papyrus' attack box, the two decide to take the child in as their own. Alyssa; curious about herself, tries to figure out how she came to be. All the while trying to figure out the meaning behind the haunting nightmares she's been having.
Rated: T - English - Hurt/Comfort - Chapters: 12 - Words: 54,022 - Reviews: 1 - Follows: 1 - Updated: 16h - Published: 6/10 - Frisk, OC, Papyrus, Sans
Two Worlds: Two Souls by Halloween Witch reviews
I flinched when I felt the rocks move from under us, no longer able to hold our weight. I latched onto my sister just as the earth shattered beneath us and gave way to a free fall. Frisk screamed and I struggled to hold her to me. To use my body as a cushion when we made it to the bottom. One way or another, I wouldn't let her die.
Rated: T - English - Adventure/Romance - Chapters: 32 - Words: 157,050 - Reviews: 60 - Favs: 53 - Follows: 62 - Updated: 6/19 - Published: 11/14/2020 - [Sans, OC] Frisk, Papyrus
Born in a Taller World by The Otaku Lady Priya reviews
Being short wasn't much of an issue for (Y/n)- a few people teased her here and there, but she could handle them well. However, it turned almost intolerable once the shortest monster realized she was even shorter than him. Then came the dreadful puns. If only murder was legal and pun-ing wasn't. (Reader told in a 3rd POV) {Rating might change in future}
Rated: T - English - Humor/Romance - Chapters: 1 - Words: 2,755 - Reviews: 1 - Follows: 2 - Published: 6/19 - [Sans, OC] [Undyne, Alphys]
Sanctuary of Stardust by Sheii Bae reviews
Born into a life of cruel subjugation and confinement, a young child discovers that a different kind of prison might just become her safe haven. But nothing is ever that simple. With a deadline looming and troubles starting to pile up, a new friend with a lazy grin could be just what she needs right now. Multiple AU's. Slow burn. Female Frisk. Contains OC's. Eventual SansxFrisk
Rated: T - English - Hurt/Comfort/Family - Chapters: 31 - Words: 68,591 - Reviews: 76 - Favs: 16 - Follows: 19 - Updated: 6/18 - Published: 2/20 - Frisk, OC, Papyrus, Sans
Omega Child by Sokin reviews
After a neutral and genocide run, Frisk tries something new in the remade world: Mercy. Can Frisk, who gave their soul to Chara, truly make friends with the monsters? Is it even worth it when Chara can take over at any time and ruin things? Is the power of love and friendship enough to overcome a demon with your soul? Of course not! But perhaps, with the power of the monsters...
Rated: T - English - Adventure - Chapters: 9 - Words: 37,119 - Reviews: 11 - Favs: 6 - Follows: 9 - Updated: 6/17 - Published: 6/16/2018
Magnificent Plan by PokeDopes reviews
Frisk promised to free monsterkind from the Underground but died at Asgore's hands. Several years later, the Underground leads another human into its dark depths… Only this time, things are much different, and a misunderstood murdering of monsterkind leads to a total reset that brings two timelines together in a way that was never meant to be. Undertale AU story.
Rated: T - English - Chapters: 10 - Words: 52,163 - Reviews: 6 - Favs: 4 - Follows: 3 - Updated: 6/17 - Published: 4/23 - OC, Sans, Chara, Flowey
What is best for humankind by Theta and Koscheii
At the end of the war, monsters don't have the choice : they have to join Mont Ebott for survive an other day. Sans and Papyrus, forced to run away after the attack of their village, are delivered to the horror of the war without any help and this one objective. But as sons of the royal scientist, W.D Gaster, they are an easy target. Both of them start a dangerous journey.
Rated: T - English - Adventure/Drama - Chapters: 10 - Words: 20,338 - Favs: 1 - Follows: 1 - Updated: 6/17 - Published: 4/6 - Papyrus, Sans, Undyne, Toriel
Error Kisses Ink and Dies by ReflectingAbsence reviews
Depression baby MMMMM
Rated: T - English - Romance/Angst - Chapters: 1 - Words: 42 - Reviews: 1 - Published: 6/17 - Sans - Complete
Prince's Hymn by Nicolle reviews
High on the ridge overlooking sleepy Nightrest, Chara Dreemurr lives like a ghost, forever mourning the loss of his wife and their daughter... Until Frisk, a child fleeing war stumbles onto his property. But the politics surrounding Frisk's refugee status aren't the only worry for a human in the 'Monster Country.' The forest has eyes and they are all looking at Frisk.
Rated: T - English - Supernatural/Horror - Chapters: 22 - Words: 69,729 - Reviews: 18 - Favs: 13 - Follows: 15 - Updated: 6/17 - Published: 10/1/2020
Amity by MyStarfield
Short Background story of a character from the fanfiction, Flowerpop
Rated: K - English - Chapters: 1 - Words: 1,192 - Published: 6/16 - OC
Grouptale REWRITE by iHateFridays reviews
Instead of dying before Frisk, the six fallen humans instead join Frisk on their journey through the Underground. But things are not what they seem. How do they escape? What is Frisk hiding? And much more... cover by me.
Rated: T - English - Adventure/Friendship - Chapters: 14 - Words: 51,209 - Reviews: 9 - Favs: 18 - Follows: 15 - Updated: 6/16 - Published: 3/17 - Frisk, Chara, Purple Soul, Yellow Soul
Cyclical Trauma by Mr.Vaster reviews
It would take only one run, to leave any child scarred. Let alone several loops. Now even on the surface with a promise of an end to the resets, can Frisks new family be both the ones to bring about, and soothe their mental scars. (Depictions of anxiety, paranoia, and depression and related, etc)
Rated: T - English - Hurt/Comfort/Family - Chapters: 4 - Words: 13,179 - Reviews: 3 - Favs: 6 - Follows: 9 - Updated: 6/16 - Published: 4/8 - Papyrus, Sans, Undyne, Toriel
Game Controlled by WingedCat5 reviews
Undertale, one of the coolest games around. Simple story, excellent characters, and endless fanfiction potential. But what if it wasn't just a game? What if it could be free of its true and final enemy? The Player.
Rated: T - English - Friendship/Fantasy - Chapters: 11 - Words: 33,107 - Reviews: 3 - Favs: 12 - Follows: 17 - Updated: 6/16 - Published: 1/27 - OC, Papyrus, Sans, Chara
Undertale Fallen Determination: Book 2 by Cobalt Gemini reviews
After Chara is freed from the Void, reunited with her friend, Gaster, and gone through a Reset of time, she must now help guide young Frisk through the Underground, showing her to get by without harming anyone. (Female Adult Chara, Female Frisk)
Rated: T - English - Family/Hurt/Comfort - Chapters: 15 - Words: 44,193 - Reviews: 5 - Favs: 17 - Follows: 17 - Updated: 6/15 - Published: 4/23/2020 - Frisk, Chara, Gaster
SOUL by Poodlebot 906 reviews
Every world has a set timeline, with specific events that happen, right? The world of Undertale is no exception, even if it is a little less... stable than most. But in the semi-infinite vastness of the multiverse, wasn't something bound to happen to alter these events eventually? Whether one extra SOUL will alter the Underground for the better or worse... only time will tell.
Rated: T - English - Romance/Adventure - Chapters: 14 - Words: 84,706 - Reviews: 29 - Favs: 31 - Follows: 32 - Updated: 6/15 - Published: 8/11/2020 - Frisk, OC, Chara
SOM's SOULTALE (Neutral) by strikeofmidnight12
When the humans banished the monsters to the Underground, it took the lives of the 7 most powerful human sorcerers to create the Barrier. They were reincarnated into different times. Drawn to the Barrier, their second incarnations fell into the Underground. You are Frisk, a human, with a powerful soul. You have fallen in as the eighth human, and hopefully, the last.
Rated: T - English - Supernatural/Adventure - Chapters: 2 - Words: 216 - Follows: 1 - Updated: 6/15 - Published: 5/28
Love Can Heal Even The Worst Wounds by GoldGuardian2418 reviews
Sequel to "Love Holds Us Together". Five years have passed since the battle at the barrier and the Underground is thriving. But danger rises again when a little girl with all seven traits falls into Mt. Ebbot along with her aunt, who has monster DNA in her, both running from an abusive home, but can they find a new home and healing there? Done as a request for dream1990. :)
Rated: T - English - Family/Hurt/Comfort - Chapters: 9 - Words: 14,798 - Reviews: 19 - Favs: 11 - Follows: 7 - Updated: 6/13 - Published: 4/18 - [Papyrus, OC] Sans, Asgore D.
Fractured Timelines by SonicChaosEmerald
Lost and confused, a young girl soon finds herself trapped deep below ground in the realm of a collapsing world. Against the odds, she must face the dangers head on and move forward with herself and her new friends she makes along the way. But can she SAVE this world before it's too late? In tribute to Undertale's 5th Anniversary.
Rated: T - English - Adventure/Fantasy - Chapters: 8 - Words: 67,351 - Favs: 6 - Follows: 8 - Updated: 6/13 - Published: 9/15/2020 - Frisk, Chara
The lost tale by Night's feather reviews
Everyone knows about the eight fallen humans, right ? But what if a young boy slipped through the net of this story ? "Sans ! You're awake !" "Who on earth is Sans ?" Well, the underground is definitely not as he thought...
Rated: T - English - Chapters: 45 - Words: 53,231 - Reviews: 26 - Favs: 44 - Follows: 51 - Updated: 6/13 - Published: 9/2/2016 - Papyrus, Sans
What even IS a gender? by 28-characters-later
Flowey learns a little bit more about themself after Cagney helps calm them down from a stress-induced panic attack.
Rated: K+ - English - Romance/Family - Chapters: 1 - Words: 2,357 - Published: 6/13 - Flowey - Complete
Coronation by eggbert05 reviews
After Chara falls into the Underground, an entirely different series of events takes place. As the world below's princess, the human tries to find a way to free her new family.
Rated: T - English - Family/Drama - Chapters: 18 - Words: 27,277 - Reviews: 7 - Favs: 7 - Follows: 8 - Updated: 6/13 - Published: 2/4 - Chara, Frisk, Papyrus, Sans
Sugar and Spice by SapphireOcean
…can make spectacular explosions. An oblivious robot, a spider with a crush, and one enabling human teenager equal a cornucopia of escapades.
Rated: K+ - English - Humor/Romance - Chapters: 5 - Words: 30,202 - Updated: 6/12 - Published: 11/29/2020 - [Muffet, Mettaton] Frisk, Chara
Vermifuge by aeraecura
Freed from the Fresh parasite's control, Sans finds himself in an Underground that isn't quite his own. He takes what's been given to him as best he can. (Or: a slightly gentler alternate ending for a character with a disturbing fate, as written by a canon purist with little affection for AU content. With apologies to Hiroyuki Owaku.)
Rated: T - English - Angst/Family - Chapters: 4 - Words: 26,091 - Favs: 1 - Follows: 1 - Updated: 6/11 - Published: 4/1 - Papyrus, Sans, Undyne, Alphys
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