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Steven Universe and Undertale Crossovers
27 A Fallen Gem » by SpookyDJ (Jaspertale) In the year 201X, an earthquake causes someone neither human nor monster to fall into the Earth. They land in the Underground, where a small family finds and takes care of them. Leaving the Underground is impossible, so they begrudgingly stay. They may be stuck here, but it at least gives them time to think and learn a little. (Contains Steven Universe Spoilers)
K+, English, Friendship, chapters: 9, words: 30k+, favs: 72, follows: 68, updated: 3/24 published: 5/17/2016, Jasper, Asriel
1 Dirty Diamond Shatterer by Instaquarius Takes place after the SU movie and a bit into Future after Steven had shattered Jasper, and sorta after Homeworld Bound but with a twist.
T, English, Angst & Tragedy, words: 5k+, favs: 1, follows: 1, 11/23/2020
13 Wrong Universe, Wrong Tale (Stevisk Underverse) » by Tainted Sushi There where two separate Universes that seemed to switch places. Only problem is, that only two people remember their past life and they're in the wrong universe. Can these two survive in each other's world, or will they ruin they're lives forever?
K+, English, Adventure & Friendship, chapters: 4, words: 3k+, favs: 18, follows: 17, updated: 4/25/2020 published: 9/9/2016, Steven U., Onion, Frisk, Chara
1 Bergentrückung by GasterBlaster0528 Digamos que tenemos distintos universos, bueno, hagamoslo más divertido. Juntemos a todos en uno sólo, no creen que algo interesante puede salir de esto? El comienzo de un universo que voy a crear con varias cosas. Steven Universe, Star vs las fuerzas del mal, Undertale, Subnautica, Boku no hero academia y otros más Esta historia va a tratar de Steven Universe y Undertale
K, Spanish, words: 214, favs: 3, follows: 5, 12/7/2019, Steven U., Asgore D.
4 Gemfell by Funnyfan1912 Basically Underfell with Steven Universe characters.
T, English, Humor & Angst, words: 35, 12/5/2019
1 Corrompido Por Dentro » by uroboros001 Steven tras un evento traumático de su infancia descubre nuevos poderes para evitar que las gemas del planeta madre conquisten la tierra (Steven con los poderes de Betty noir Au Glichtale)
K+, Spanish, Romance & Sci-Fi, chapters: 3, words: 5k+, favs: 9, follows: 7, 7/26/2019, [Steven U., Amethyst, Pearl, Garnet]
4 Gemtale 1: Pacifist » by Mew Mew Author Cutie A young orphaned girl is done. She falls down a hole. What she finds will forever change her life.
T, English, Adventure & Friendship, chapters: 2, words: 2k+, favs: 3, follows: 3, 4/10/2019
2 Inside Falls - Season 1 » by MinecraftFan11Scratch Chara Dreemurr and her twin sister Frisk Dreemurr go to Inside Falls spend the summer with their grauntie Pearl Crystal Dreemurr. At first,it starts like any boring summer. That is,until Chara finds a mysterious book which the cover is two gemstones of red and blue color with a number '3' between them... (A Gravity Falls AU and Multi-crossover.)
T, English, Supernatural & Adventure, chapters: 11, words: 20k+, favs: 10, follows: 9, updated: 3/5/2019 published: 9/12/2018, Pearl, Frisk, Chara
1 Steven Universe: Determined Goatman by Robbie Patrick My longest Story yet and my first SU Fanfic. Please note this has been in development since mid-last year (2018) so the characters and settings will not be the same as what ever they currently are by the time you read this. Either way, I've put a lot of time and effort into this so I hope you enjoy. If demand is popular enough I may make a sequel at a later point but no guaranties.
K+, English, Drama & Adventure, words: 8k+, favs: 11, follows: 12, 2/2/2019
7 Steven and the Undergound Adventure » by ShadowQueen46 Steven and the Gems went to stop a gem mutant. But something went wrong and Steven and Emerald fell underground. What new adventure a waits Steven underground. Will he make friends or enemies. ( I don't own Steven Universe or Undertale but I own my OC.)
K+, English, Adventure & Friendship, chapters: 15, words: 20k+, favs: 31, follows: 27, updated: 12/24/2018 published: 5/15/2017, Steven U., OC, Frisk, Sans
Empress Gail » by BasboBibbins Empress Gail is an amalgamation of seasons 4 and 6. Also, get it? See what I did there? The tittle is a reference to Empress Theresa.
K+, English, Sci-Fi & Adventure, chapters: 7, words: 4k+, favs: 1, updated: 11/4/2018 published: 10/18/2018, Sans, Aaron, Lesser Dog
9 Steven Universe and Sans Destroy the Alt-Right! by Trumpisugly The evil Alt Right has decided to invade Charlottesville once again! This time, they want to install Donald Trump statues all over the town! But Steven Universe and Sans won't let them do that without a fight!
T, English, Drama & Angst, words: 370, favs: 5, follows: 2, 10/8/2018
4 A Flower Among Gems by Vampire Tails Steven is sent to Mt. Ebott to investigate. He ends up bringing something home...
K+, English, Hurt/Comfort & Adventure, words: 1k+, favs: 39, follows: 37, 9/20/2018, Steven U., Flowey
7 When Worlds Collide by Alex - Comic Book King i owe this all to my friend for introducing me to this show and game. they're freaking awesome. if you're reading this then you totally agree. the title says it all. the worlds of Undertale and Steven universe meet together In one incredible adventure. Please enjoy and leave comments ;)
K+, English, Friendship & Family, words: 2k+, favs: 10, follows: 20, 1/27/2018
7 StevenTale » by Sam Pancakes This is my first fan-fic EVER so don't judge to hard. AND Enjoi! Oh and it is the Undertale routes but I have my own little SU twists and stuff ;)
T, English, Fantasy & Adventure, chapters: 4, words: 3k+, favs: 6, follows: 8, updated: 12/8/2017 published: 10/21/2017
1 StevenTale Chapter 3 by Sam Pancakes Steven and Amethyst mean the skeleton bros, Sans and Papyrus!
K+, English, Fantasy & Adventure, words: 584, favs: 1, follows: 1, 12/2/2017, Amethyst, Steven U., Papyrus, Sans
1 Papyrus, The Sad Orphan by Erman Bullock Orphan isn't something you are born as, its something you become. In a recent tragedy, Papyrus has now become this very unforgettable word. Will it all be for nothing? What will he make of his life after he lost people whom he loved. Does Stephan Universe have anything to do with the murders? Only one way to find out...
K, English, Tragedy & Suspense, words: 950, favs: 1, follows: 1, 11/24/2017, Steven U., Papyrus, Sans
11 The Surface of Beach City (abandoned) » by MoonLight-DJ15 After freeing the monsters, Frisk decides to take his friends on a vacation to Beach City.
K+, English, Adventure & Friendship, chapters: 4, words: 2k+, favs: 24, follows: 29, updated: 11/9/2017 published: 10/1/2017
2 StevenTale Chapter 2 by Sam Pancakes Go check out the first one before this ok now enjoi!
K+, English, Parody & Adventure, words: 596, favs: 1, follows: 1, 10/24/2017
4 Two Worlds, One City by Pegacornlover85 If Steven expected to have a nice, calm day to spend with Connie, he's dead wrong. (Cruddy so far, may remake it.)
T, English, Fantasy, words: 543, favs: 5, follows: 4, 8/30/2017
3 Gemstones From Below » by Keinett A story that narrates what could had happened if gems existed instead of monsters. After the long, sorrowful war between humans and gems several events took place over the years.
T, English, Adventure & Fantasy, chapters: 3, words: 4k+, favs: 1, follows: 2, updated: 6/20/2017 published: 6/10/2017
26 Dust And Shards » by Stevethebarbarian Two worlds. Five and a half gems. Eight and a half monsters. Three humans. One little yellow flower. And an experience that none of them would ever forget.
T, English, Adventure & Humor, chapters: 6, words: 14k+, favs: 49, follows: 63, updated: 6/1/2017 published: 9/4/2016
2 Mint's Book of Forum Tales » by Mint Writer Presents So, thanks to Caesar's Palace, I'm in the swing of things again. These are just one shots that have been compiled into a book of tales! Some of them may be bad but hey! Sometimes writers have bad ideas! Hope you like it!
T, English, Adventure & Parody, chapters: 2, words: 2k+, favs: 1, follows: 1, updated: 2/25/2017 published: 8/18/2016, Lapis Lazuli, Peridot, Frisk, Toriel
55 Old Friends » by HappyPup1 Frisk was just taking Flowey up to the surface. normal Flowey Pot AU stuff right? but when Frisk reaches Waterfall a mysterious pink lion arrived carrying someone Frisk thought they'd never see again. Flowey Pot AU!
K+, English, Family & Humor, chapters: 9, words: 6k+, favs: 64, follows: 71, updated: 1/30/2017 published: 5/26/2016
21 Steven Universe Plays Undertale » by gumballfazbearswiftie What happens when your 2 favorite fandoms combine? Watch as Garnet, Amethyst, Pearl, Peridot, Lapis, Jasper, Connie, and Steven play Undertale! Rated T for some swearing. I do not own Steven Universe or Undertale
T, English, Humor & Adventure, chapters: 3, words: 1k+, favs: 32, follows: 35, updated: 1/18/2017 published: 7/30/2016, Pearl, Garnet, Amethyst
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