A list of Undertale AUs you can find being updated on Quicksilver and our affiliate pages, featuring one track from each AU so you can find their respective playlists from there. Some of these AUs are updated rarely, but if they're on here then there are still plans to continue them!

Quicksilver's Active AU Masterlist!

The monsters were in a difficult situation, but they held onto their hopes and dreams.
That is until one final human came along...
And they all disappeared without a trace.

Aftergore is a series of AUs taking place after Undertale's neutral endings, in which a new human enters in Frisk's wake.
Aftergore VI, the King Papyrus ending, details an ending in which everyone who could be killed by Frisk was killed with the exception of Papyrus. He's the ruler of the underground by default now, and he does his best to keep morale up in an underground more hopeless than ever before. Humans are to be treated as targets of puzzles, no matter their moral alignment. At least that's Papyrus's goal. His subjects might not be so keen on that.

Learn more about Aftergore and other projects here! discord.gg/qmtQxwYKfD

Aftergore logo by @repeatsc and Toadie

[Aftergore VI] Where We Left Off

*(The elites of this little society are dogs.)
*(It is a caninocracy.)
*(Such perfect politics inspire you to stay determined.)
*(So that's exactly what you'll do.)

Aftergore is a series of AUs taking place after Undertale's neutral endings, in which a new human enters in Frisk's wake.
Aftergore VII, the Dog ending, details a strange ending in which Toriel, Papyrus, Undyne, Mettaton, and Asgore were killed, but everyone else was left alone. Now a little white dog rules the Underground by doing little more than sleeping on the throne all day. Somehow, this is working out...really, really well for everyone? NOTHING IS OUT OF PLACE. DON'T WORRY ABOUT IT. EVERYTHING IS FINE. =)

Learn more about Aftergore and other projects here! discord.gg/qmtQxwYKfD

Aftergore logo by @repeatsc and Toadie

[Aftergore VII] Snowdog Town

Not too long ago, a series of seemingly random characters were robbed from the worlds they came from.
Disgruntled though they were, they eventually managed to make the dimension of ENTROPY they lived in a place to call home.
There seemed to be no rhyme or reason to their imprisonment, and though they had learned to value each other's company, they longed for a way to get home.
This strange new status quo remained untouched for a short while. That is, until a sickly young king presented them with a prophecy.
A prophecy about the floofy-haired boy whose SOUL would save them all.
Now the inhabitants had been presented with a mission, which they waited months to enact.
Until at long last, the inhabitants were presented with a boy.

Figured for this special month it was time to give this AU a true opening.

The motifs here are sneak peeks of songs that are eventually coming for the Zeno album (yeah that's right that's still happening eventually). At least that's the case for the first two parts. The last part is just his Schreibertale theme, Is Military Time Violent?

Equilibrium Dizrupted playlist: https://soundcloud.com/toadiedoesalltheworktbh/sets/equilibrium-dizrupted-ost

For more updates on this AU and many others: https://discord.gg/qmtQxwYKfD

[Equilibrium Dizrupted] Revenance

Seems like an update to a track called "A New Chapter" would be a proper celebration for our return!

Aftergore is a series of AUs taking place after Undertale's neutral endings, in which a new human enters in Frisk's wake.
Aftergore II, the Betrayed Undyne ending, details an ending in which Frisk ruins their streak of pacifism right before the end, slaying the celebrity robot Mettaton on live television. Toriel has taken her ex-husband's place after his death, and she struggles to maintain morale in an increasingly wary underground. Humans are to be treated not as enemies, but as friends. At least...in theory.

Learn more about Aftergore and other projects here! discord.gg/qmtQxwYKfD

Aftergore logo by @repeatsc and Toadie

[Aftergore II] A New Chapter

The year was 199X.
It was the height of the 16-bit era.
And one company reigned supreme.

Leitmotifs present are:
* Earthbound - Title Screen
* SNES Classic Edition - Main Menu

All rights belong to Nintendo, etc etc.

16 Bits Sequestered is an Undertale AU centered around the SNES Classic Edition, featuring characters/locations from the games pre-packaged with that system. Ness takes the role of Frisk.

For more information on 16 Bits Sequestered and many other projects, join our Discord!
https://discord.gg/qmtQxwYKfD

This song is also on our YouTube channel, and can be found here:
https://youtu.be/OJdbBl9gLIc

AU logo by: stellardee (https://twitter.com/stellardee_)
Thumbnail by: Toadie
Song title by: Slick Silver

[16 Bits Sequestered] Simpler Times

*Oh my, a human!
*I have not seen one of you here in the Underground for some time.
*Are you alright?
*Well, good. Dust yourself off and we shall get moving.
*There is much for us to discuss.

Undertale: Divine Intervention is an AU in sometime before the events of the game, the characters have nightmares about a reality where they are their worst selves, and are instructed by a strange voice to change their ways in order to avoid this reality.

Toriel keeps her role, and has interpreted this dream to mean that she should tone her obsessive behavior around humans. While she still has motherly instinct, her mission is now to prepare fallen humans for the harsh Underground ahead, rather than hiding them from it.

This logo is a placeholder and is likely to be changed in the near future.

For more info on Undertale: Divine Intervention and many other Slick AUs, check out: discord.gg/qmtQxwYKfD

[Undertale: Divine Intervention] Getting Back Up

Long ago, the world was "haunted" by demons and monsters.
Neighborhoods across the world were terrorized by things going bump in the night.
After years of bloodshed, the "forces of good" banded together and sealed the demons away in the magic PUZZLE BOX, ridding the world of all evil.
Or at least that's how the story goes.
Many a movie has been made maligning these creatures, misrepresenting their tales and kicking them while they're down.
But anyone who manages to see inside the PUZZLE BOX...
May get a slightly different story.

Behind Silver Screams is an AU paying homage to classic horror movies new and old. Find out more about it and so many others on the Slick Server!
https://discord.gg/qmtQxwYKfD

[Behind Silver Screams] A Scary Story to Tell in the Dark

"To whoever is reading this, hi. My name is Atlanta Stones.
I’m gonna start writing in this journal, because I don’t know when the next time I’m gonna see a human being is.
If I die out here, I wanna say the final “first impression” I left was a strong one.
I have a chronic habit of finishing other people’s sentences and I don’t intend to change it…
Because whatever I’m GUESSING you were gonna say is probably more interesting than what you were ACTUALLY going to say.
And life is too short for disappointing conclusions.
If I cared about my education, I’d get a doctorate in ass-kicking…
A program that the local college would start offering because I would demand them to."

Deluge is an Undertale AU based on the classic AU "Undersail." In this timeline, monsterkind takes revenge on humanity after losing the war by devastating the land with a giant flood, making life difficult for humans and monsters alike. Now, decades later, a new human named Atlanta is sailing into enemy waters to find her missing brother.

This is the theme for that human, and does not replace anything.

Read the Deluge teaser here: https://docs.google.com/document/d/174oc68Ed71BUY4DjJEtQCylxRJmQ3jGdlxStfeoFl10/edit?usp=sharing

For future updates on Deluge and many other Slick AUs, check out the Slick server: https://discord.gg/qmtQxwYKfD

[Deluge] Not Yours (Or Anyone Else's) Truly, Atlanta Stones

*The wind howls around the barrier.
*At long last, two pillars of determination...face to face.
*The queen beckons you to pour all of your heart into this fight.
*So that's exactly what you'll do.

Aftergore is a series of AUs taking place after Undertale's neutral endings, in which a new human enters in Frisk's wake.
Aftergore IV, the Queen Undyne ending, details an ending in which Toriel and the Ruins monsters are killed, but everyone else is left unharmed (other than Asgore of course). Undyne rules the Underground with an iron fist. Humans are to be treated as enemies, not friends.

Unsurprisingly, Undyne takes the role of Asgore. With her hero gone, she has furiously taken over the Underground, and rules it militantly. She has vowed to break the Barrier by any means necessary, and strike vengeance upon mankind for their transgressions. The world will come to fear the name QUEEN UNDYNE.

Learn more about Aftergore and other projects here! discord.gg/qmtQxwYKfD

Aftergore logo by @repeatsc
Undyne art by @moonstrikefour

[Aftergore IV] The Meaning Of Justice

A guest submission by @sexy-synth-man! Please follow him, he's great and deserves way more attention.

Aftergore is a series of AUs taking place after Undertale's neutral endings, in which a new human enters in Frisk's wake.
Aftergore V, the King Mettaton ending, details an ending in which Asgore, Toriel, and Undyne are all slain, leaving Mettaton next in line for the throne. He's turned the Underground into an aesthetic corporate dystopian paradise. Humans are to be invited to join his Fan Club. And if they reject it, they die.

Learn more about Aftergore and other projects here! discord.gg/qmtQxwYKfD

Aftergore logo by @repeatsc and Toadie

(Guest Track - Ethosein) [Aftergore V] Where We Left Off

Aftergore is a series of AUs taking place after Undertale's neutral endings, in which a new human enters in Frisk's wake.
Aftergore CDIV, the Impossible/Dirty Hacker ending, details an ending in which a curious player messes with code to make a certain boss both dead and alive at the same time. The results are...illogical. Humans are to be treated as threats to the timeline above all else, and that is a crime punishable by death.
If you're curious on the AU name, all the Aftergores are numbered with Roman numerals. "CDIV" translates to "404."

Learn more about Aftergore and other projects here! discord.gg/qmtQxwYKfD

Aftergore logo by @repeatsc and Toadie

[Aftergore CDIV] Where [?̷̴̨͢?̵̢͜͝?̧͟͝͠͞] Left Off

Today we tell the tale of two races:
MONSTERS and HUMANS.
--

Plays during the introduction of the BelowExchange writeup, which you can find here:
https://docs.google.com/document/d/1AEN3DP9GFcphFSIIxg5XPb5KhZ39-TchQxPoiK13WqM/edit?usp=sharing

Are You Sitting Comfortably?

Amazing promotional art by @burnedtraveller!

The writeup for Aftergore I will be released eventually-- when it does, this will play at the start of every new section, getting gradually further along as the story progresses. Toadie did a great job making this escalate properly!

Aftergore is a series of AUs taking place after Undertale's neutral endings, in which a new human enters in Frisk's wake.
Aftergore I, the Incomplete/Flawed Pacifist ending, details an ending in which everyone (except for Asgore) was spared and befriended. Toriel has taken her ex-husband's place, ruling the Underground with both strictness and kindness. Humans are to be treated not as enemies, but as friends.

Learn more about Aftergore and other projects here! discord.gg/qmtQxwYKfD

Aftergore logo by @repeatsc and Toadie

[Aftergore I] A New Chapter

Long ago, two races ruled over Earth. HUMANS and MONSTERS.
After war broke out between them, the humans banished the monsters underground with a magic spell.
However, a human child, brave and determined, befriended monsterkind and destroyed mankind's Barrier.
And the Underground went empty.

Well...not quite.

Much LONGER ago, THREE races ruled over Earth. HUMANS, MONSTERS, and the PROTOTHERS.
While they once lived in harmony, the Protothers were deemed by both ancient humans and monsters to be too dangerous for the world above.
And so, they were entombed deep within the Earth, so deep that ancient man believed they could never escape.

MT. EBOTT 202X

Ancient man could not account for a volatile power plant being built within the mountain by monsters.
A power plant that, when left unattended, could easily overheat and detonate.
Such an explosion, were it to happen, would be so strong that it would shake the earth to its core.
This would awaken the mighty Protothers from their thousand-year slumber, and reignite their thirst for revenge.
But why would the monsters ever leave such a powerful tool unattended?
Unless...the underground went empty...

Amazing logo by @the-prophet-654035177 https://www.pixilart.com/prophetofgaster/gallery

Fable of the Forsaken is an AU that takes place in the aftermath of a True Pacifist Run. Mt. Ebott, ravaged by the explosion of the CORE, is inhabited by a whole new slew of eldritch monstrosities. Follow the unassuming human Nex on their quest to stop the Protothers from exacting their revenge...one way or another.

Learn more about Fable of the Forsaken and other projects here! discord.gg/qmtQxwYKfD

"This is one of my personal favorite projects. I'm really excited to show you all what I have in mind!" -Slick

"The inclusion of "THE HOLY" was purely coincidental however I really liked how it sounded here gaisejrthy" -Toadie

[Fable of the Forsaken] Epilogue

Once upon a time, there lived three misfits, the likes of which the world had never seen.
TOADIE, the classical virtuoso and whimpering bottom from the Netherlands.
CALLIE, the screaming baby brain and edgelord from Florida.
And lastly SLICK, from New York, the Top that united them both by asking them to make stuff for his AUs, that selfish prick.
These three thrived in a unit of harmony and dankness.

But soon, their perfect world fell apart.
Their expanded universe of in-jokes had grown so large that it was crumbling in on itself.
And under this pressure, two of the heroes perished, and the third vanished without a trace.

However...

STUPID BABY DISCORD LAND - 2021

Legends say that one day, one hero will return.
And like with any triangle of co-dependence...
You can’t have one without the other two.

The future is bulletproof.
The past is cellophane.
Killjoys...let’s make some noise.

Song by: @dashingtoadie-the-sequel
Motif(s) by: @dashingtoadie-the-sequel and @callieflemming
Art by: @evilredyoshis, @darwinmusik, and Rae
Logo by: @slick_silver

Relevant roles:
Frisk - Toadie
Chara - Slick
Asriel - Callie

001 - The Trinity

This will-- unsurprisingly-- be the last Aftergore track of 2020. Figured this would be a good way to end the year-- a new chapter is upon all of us, with a new year finally in sight.

Aftergore is a series of AUs taking place after Undertale's neutral endings, in which a new human enters in Frisk's wake.
Aftergore III, the Exiled Queen ending, details an ending in which only Undyne and Asgore have been killed. Toriel tried to claim the throne, but threats of a coup quickly sent her back to the Ruins. Now the Underground is in a state of instability and semi-anarchy. Humans are to be treated as...well, it's unclear right now, but it's not good.

Learn more about Aftergore and other projects here! discord.gg/qmtQxwYKfD

Aftergore logo by @repeatsc and Toadie

[Aftergore III] A New Chapter

Community is a great show and you all should watch it.
It's one of my favorite shows ever, and once Toadie finally saw it, it became one of theirs too. So naturally just like everything in my life I found something I liked and turned it into an Undertale AU. Updates will be infrequent but they'll happen-- Toadie and I would love to make this into a thing.
It also has a real banger of a theme song.

Toadie and I collabed on the logo! I think it came out quite nicely. Simplistic, but good!

Side note: Toadie fucking INSISTS that I should have called this Greentale. The only compromise we could reach is that I had to admit that in the description.

For more information on this AU and many other Slick Silver projects: https://discord.gg/qmtQxwYKfD

[Community Theater] Fundamentals of Expository Storytelling

*(Standing before you is a shell of a man.)
*(You can feel his world crumbling around him.)
*(But he needs you to end this story, one way or another.)
*(So that's exactly what you'll do.)

Aftergore Bergen 4/5 of the Royal March event!

Aftergore is a series of AUs taking place after Undertale's neutral endings, in which a new human enters in Frisk's wake.
Aftergore VIII, the Leaderless ending, details an ending in which Frisk killed everyone they encountered. They didn't go out of their way to kill everyone, so it was not a full on genocide, but a massacre for sure. Political and civil unrest has torn the Underground asunder, Humans-- and anyone who isn't adamantly opposed to them-- are to be treated as bitter enemies.

Theodore, known to some as "Politics Bear," takes the role of Asgore. He took advantage of the Underground's unrest and started preaching to them about the human menace, turning the populist masses against humanity as the end-all-be-all enemy. Many monsters see him as the kind of strong leader the Underground has always needed, but the man behind the mantras may not be as brave and powerful as everyone thinks he is.

Learn more about Aftergore and other projects here! discord.gg/qmtQxwYKfD

Aftergore logo by @repeatsc and Toadie
Sprite by @moonstrikefour

[Aftergore VIII] Ursa Major

Long ago, two races ruled over Earth:
INSERTS and ORIGINALS.
...
Really? This is what we're going with?
A little bit of effort would've gone a long way, guys.

Genericophony is a self-insert that is for fun and is of no particular interest. Nothing to see here. No, roles are not open.
Relevant roles:
Frisk and Chara - OCs

MOTIFS:
All motifs in this track are original.

To learn more about Genericophony and many other Slick Silver projects: https://discord.gg/qmtQxwYKfD

[Genericophony] You've Heard It All Before

Yep, it's Friday Night Funkin x UT. Had to happen eventually, right? Might as well be us. Some people might not want us making this or think it's stupid that we're doing it, because the game isn't finished and things could change at any moment. That's understandable, but honestly we're just having a fun time doing it, and things will probably change over time to accommodate with the game updating. Either way, it's a nice way to pay homage to it, because as many of you know, it's super fun. Play it here: https://www.newgrounds.com/portal/view/770371

AU logo by @creepabotinc

"Fresh" and "Start Screen (itch.io Build)" by Kawai Sprite
Friday Night Funkin' by ninjamuffin99
UNDERTALE by Toby Fox

Forever Friday OST playlist: soundcloud.com/toadiedoesalltheworktbh/sets/forever-friday-ost
Be the first to hear about new updates and other AUs here: discord.gg/qmtQxwYKfD

[Forever Friday] Lost Track of Time

Hey there, welcome to the channel! We are Slick Silver (he/him) and Toadie (they/she), and we make too many Undertale AUs!

Uploads come whenever we can manage them, we do not have an upload schedule, currently.

Unless otherwise stated, all songs on this channel are created by @dashingtoadie-the-sequel, and all descriptions are written by @slick_silver. These may be formatted a bit differently from their SoundCloud counterparts, but will contain the same information on both sides!

A big thank you to the wonderful @austhetic for putting together the awesome banner and profile icon.

We try to respond to as many comments as we can, but inevitably we may end up missing some. Sorry if we miss yours!!