#1
The First Human [X Sans] {COMPLETE}by RaeTheStar
Imagine Undertale, but Chara never showed up. Chara wasn't the first human in the Underground. What if a glitch occurred, and you fell down instead?
You fell into the Un...
Completed
#2
Knock Knock {A Sans X Reader - Und...by Cuddles the Alpaca
You were always a curious child. One day, your curiosity took you too far. You lived not to far from a mountain, MT. Ebott, and always wanted to see what was on the top...
Completed
#4
Sans X Reader // You're Too Punnyby Sir Chills-A-Lot
Smol thing I guess. I don't own Undertale (obviously), but I do own all of the art in this book (as the first A/N states). This is my first fic. I update as often as I c...
Completed
#5
Undertale (Undertale x Reader)by you wont know
You have fallen in the underground. Find a way home.
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WARNING: This book may contain spoilers for the pacifist route of Undertale.
#6
'Being A Pet All Over Again' Under...by noé
[Disclaimer that this book is very old nd poorly written, please keep that in mind!]
Sequel to 'Shy Pet' so if you haven't read that, I suggest you do!
After Y/n had die...
#7
Storyswap: STORY MODEby Julio Omega 96
This comic is made as my own image of storyswap history, with a similar story of the original undertale but with some changes. So I'm here to write how imagine how story...
#8
(Discontinued.) HEROES OF DETERMIN...by S.SENSEI!!
discontinued.
Frisk and the group wake up to find themselves in a different dimension. They soon find out that this is a world with Quirks, and they have to fit in.
Firs...
Completed
#9
Undertale Boyfriend/Girlfriend Sce...by Maggot4layp
Its on the title ;)
**
Feel free to request a scenario
Reading this story happily and Voting this story , fills me with DETERMINATION
P.s Character Requests were close...
#10
A Tree, For Us (Sans X Reader)by TheAbandonedQuiche
CONTAINS SPOILERS FROM BOTH PACIFIST AND GENOCIDE RUNS
After a horrible situation, I (Y/N) scaped from home to avenge my (sibling). In a failed attempt, I got lost and f...
Completed
#11
The Surfaceby Pidge is waifu
Every monster is on the surface. They all live in the same village. Wacth Frisk and her friends go on the surface. Follow their new journey.
*No inoporpitve stuff.
*Mayb...
#12
Jurassic Tale (Au)by * NO LONGER ACTIVE *
When the gang comes across a strange man, who offers to take them to a park he says is "unimaginable by others". They're lives fall into the hands of the creat...
Completed
#14
Becoming sans from Florataleby CorvusNix
"Darkness that's all I could see and then there was light, A beautiful kind of light no it wasn't beautiful it was so much more..."
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#15
Away from homeby TWBDC
You were abused, tortured, and the person who was supposed to be your "Father" killed the only ones you loved, you had enough. You decided it was time to flee...
Completed
#16
College With Temmie - An Undertale...by star ⭐️ moon
Stephanie travels to Snowdin Scholars College in hope to satisfy her parents hopes and dreams for her. She really does not feel interested, but she goes anyway. Stephani...
Completed
#18
Ask and Dare UnderSchoolby LatestCraze
Ask and dare people from undertale to do whatever. EXCEPT S**! NEVER THAT! They're all teens by the way.
#19
Temmageddon.by FatUndertale
Temmie gets offered treats.
Credit to Chubby-Chimaera on DeviantArt.
Completed
#20
Temmie and Annoying Dog adventures...by 404void
Annoying dog is moving out while Temmie is selling tem flakes to everyone and becomes a delivery man. Can they both still live together?
Completed