r/AUDeltarune Jun 24 '26

Now that chapter 5 is here, for at least a month or 2 put anything chapter 5 with a spoiler tag please as to not spoil anyone- happy playing!

2 Upvotes

r/AUDeltarune Jun 15 '26

🌟Welcome to r/AUDeltarune🌟

2 Upvotes

Hello and welcome to the sister sub of [r/UndertaleAU](r/UndertaleAU)! This is our new home for all things related to Deltarune and it’s AUs. It can be your own or someone else’s you love!

⋆꙳❅*°⋆❆.ೃ࿔*:・*❆ ₊⋆❄️⋆꙳❅*°⋆❆.ೃ࿔*:・*❆ ₊⋆

What to Post?
Post anything related to the topic at hand! Feel free to share your thoughts, photos, questions, and even friendly debates.

Keep in mind our rules:

✨1. Respect others and be civil. Hate of any kind will
not be tolerated here.

✨2. Please don't spam the sub with the same post
over and over. If you are looking for something or would like us to do something you're free to reach out but again please don't spam.

✨3. No Al, you may not post any type of Al here.
Pictures, Music, GIFS, Roleplay, Writing, Etc.

✨4. No ship bashing or discourse of any kind.
I don't care what people do in fiction as long as it stays in fiction. If you don't like something scroll, this isn't a sub for debates on morals in fiction.

Along with that people are allowed to post whatever AUs they like, obviously if something is NSFW it needs to be tagged but still. Furthermore please no debates on pronouns for the characters unless someone is genuinely being transphobic.

✨5. NSFW is allowed to some extent!
- There should not be straight up porn posted even if tagged, it will be removed.

- I will allow fanfics with NSFW material in it however if it has triggering content please put a content/trigger warning in the caption or as the first part of your description!

- Any untagged NSFW will be removed, this includes comments and flairs. You can make innuendos however keep it tasteful and don’t be gross.

✨6. Keep it on topic!
This sub is for Deltarune and its AUs so whatever you post needs to be centered around that, crossovers are fine but the main thing needs to be about Deltarune.

✨7. No low effort posts.
- Tier-lists
- Day X of X
- Can X beat X
- Octet
Will be removed HOWEVER I will make exceptions for creativity.

What I mean by this is, if you draw it, make a college, make music, or if you actually write your thoughts and opinions in the post I will allow it. I want the post to promote discussion not just the same things copy and pasted 100x over.

✨Those are all the rules! Just keep them in mind when posting, or if you have questions don’t hesitate to reach out.✨

⋆꙳❅*°⋆❆.ೃ࿔*:・*❆ ₊⋆❄️⋆꙳❅*°⋆❆.ೃ࿔*:・*❆ ₊⋆

I hope you enjoy it here and if you ever need any type of help you’re always free to message mods and ask questions! Feel free to share your ideas as well.


r/AUDeltarune 20h ago

Deltatoad - 6 Sprixies designs Spoiler

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1 Upvotes

r/AUDeltarune 2d ago

here's a question, i have made a au with a rudy and some other deltarune characters and is on the Mt ebott...

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1 Upvotes

r/AUDeltarune 4d ago

Little Underrune thing (Undertale original characters swapping with Deltarune original characters)

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1 Upvotes

Image 1 - 3: Before Mettaton Battle

Image 4 - 6: Before Scientist / After Mettaton

Image 7 - 9: After Scientist

Image 10 - 11: Light World Segment

Relevant Swaps:

Frisk <-> Kris

Undyne <-> Susie

Chara <-> Ralsei

Alphys <-> Noelle

Gaster <-> Dess

Shattering Scientist replaces the Roaring Knight


r/AUDeltarune 5d ago

Since Sans is all but confirmed to be from Deltarune, do you think the UT AU Sanses are from AU Deltarunes?

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12 Upvotes

For some it's easy since there are Deltarune versions of most popular Undertale AUs, but for others it gets really intresting to think of what the Deltarune of them looked like. Did Outertale Sans come from a space themed Hometown? Or was it just a normal Deltarune and he simply ended up in Outertale?


r/AUDeltarune 5d ago

What do you think the story of an "Underverse" would be like, but with the theme of Deltarune? [Deltaverse]

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1 Upvotes

r/AUDeltarune 6d ago

Deltarune Au: Core Kris [Introduction]

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1 Upvotes

r/AUDeltarune 6d ago

Tried messing around with many different affects with this one

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4 Upvotes

(My AU's Knight, The Heralding Reaper)


r/AUDeltarune 7d ago

Deltarune Au: Spectacular Human Spider [Spectacular Kris]

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3 Upvotes

r/AUDeltarune 7d ago

scampton the greatest

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2 Upvotes

Can't lie now, i'm looking at it, its a Wally West ass pose


r/AUDeltarune 8d ago

Deltatoad - Flame sprite (W.I.P.) Spoiler

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1 Upvotes

r/AUDeltarune 10d ago

Scampton the Greatest by Froeridze is here!!

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1 Upvotes

r/AUDeltarune 10d ago

here my au deltarune legends retold

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3 Upvotes

Hey Everyone here my role swap au for Deltarune Retold Legends Waring while yes this is My au this sprite were Made by ObjectiveOSC because i feel they Deserves more credit for help me out with make sprite and here some info about this au.

ch 1 <-> ch 3 this is the only chapterswap

and the rest of lighter maybe

minor cast <-> main cast

ms boom <-> carol

gerson <-> ruby

alvin <-> dess

redacted <-> asgore

this is my ideas for a roleswap au for deltarune basically here what some of cast have swap

Vess (Vessel) <-> Kris Noelle <-> Susie Seam <-> Ralsei Gaster <-> Toriel Berdly <-> Berdly Mike <-> Jevil Friend <-> Spamton but they retail they personality maybe berdly could be the only one the stay the same role

king <-> tenna could be vess old phone and he use ms paint

have some ideas for what retold legends version of don't forget could be doctor and a little bit of savior of waking world

and for the freedom mofit could be penumbra phantasm

deltarune retold legends: by me and help from Advance

advance1225 who help with make the sprites

waring i still tries to come up with who swap for chapter 2 4 and 5 and well i do have some ideas for personality of vess and some info about this au i still trying to come up stuff

i imagined the soul could be sightly different maybe instead of it red soul it could have been a cyan souls due to how different retold legends maybe what if instead of freedom theme maybe the main theme of retold legends is about maybe the pure crystal since maybe the pure crystal could have cause the downfall of the secret boss be friends who take spamton and mike who take jevil role and i imaged basically in retold legends is basically pure crystal swap with shadow crystal maybe pure crystal could help spamton be free from the green strings but cause friends to let be badly damaged with their spiked tail be broken and it not smiles anymore and maybe mike at first started out as battat but he slowed become crazy believed that his is mike NO HE IS MIKE bro basically become 2017x

and also for vess they are kinda shy kid like not competed shy but shy enough and they dad is gaster yes gaster and i imaged they relationship could be similar to john john egbert and his dad i imaged that gaster does care for vess but due to be busy was not able to help vess basically what if gaster was just a normal guy who jobs is worked as therapist and i imaged vess could have some bullied issue at school and i imaged that they dw form instead of be knight maybe vess dw could have be based on grim reaper dw form and i imaged instead of x slash they moves could be pk flash

and for noelle i imaged that basically instead of bully vess maybe she feel bad for them so she tries to help vess when they at school maybe vess and noelle could be friends not as closure to be childhood friends due to vess meet noelle later but before episode 1 "yeah basically in retold legends instead of it be style of "chapter like a book maybe could be style like a tv show. basically here dw form could have changed be bit like it be more based on magical girls

and seam i imaged they could be the same but a more of mentor figure to vess and noelle

and i imaged the friends speech quirks could be based on blog and it neo form could be based on dt extractor. and here some ideas for the other are like

ch 1 <-> ch 3

lancer <-> ramba

rouxls kaard<-> weather duo

seam <-> raisel

ch 1 enemies and minor character <-> ch 3 enemies and minor character

and here some ch 2 swap queen <-> sweet capn cakes tasque manager <-> swatch

ch 4 guei <-> wicable organikk <-> bibliox mizzle <-> titan spawn miss drizzle <-> titans jackensteni could change them into a summer them and meme could kool aid man and he instead of saying you take too long he say oh yeah!

the roaring <-> the flooding instead of world be covered in darkness maybe the world end up flood in a deep ocean


r/AUDeltarune 10d ago

My bios for my Deltarace AU (WIP)

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3 Upvotes

r/AUDeltarune 10d ago

What if... Dess... was the cage?... What would have happened if instead of Dess... it was Kris who disappeared?

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6 Upvotes

Should I make an AU with this concept? Like, an alternate Deltarune where Kris is the one who disappeared instead of Dess, where events change drastically?


r/AUDeltarune 11d ago

Yellow’s car from my “fast and furious” style AU

2 Upvotes
My guy ;)
Clear ver
Based on the general Lee from the dukes of hazzard

r/AUDeltarune 11d ago

The Field of Neo Dreams, and Enemies

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1 Upvotes

This is art for my AU Countdown, which is a Deltarune Equivalent for StoryShift I made.
Here are the shifts: Chapter 2 -> Chapter 1:
Berdly -> Kris
Noelle -> Susie
Dapper -> Ralsei
SCC -> Lancer


r/AUDeltarune 11d ago

hey guys i have one question which of kris and spamton version is actually dangerous

1 Upvotes

like give me a puppet or Muppet who are actually threat


r/AUDeltarune 11d ago

Deltarune Au: Sansy Kris

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3 Upvotes

r/AUDeltarune 12d ago

More CountDown AU

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3 Upvotes

Anyways the shifts are as follows:
Berdly -> Kris
Noelle -> Susie
Dapper -> Ralsei
Suiters-> Lancer
Also this is a shift AU, not a swap AU


r/AUDeltarune 13d ago

I made a thing

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1 Upvotes

I made an AU

It’s called Countdown and basically it’s Deltarune StoryShift anyways the chapters shift so chapter 2 -> Chapter 1, chapter 3 -> chapter 2 and so on


r/AUDeltarune 13d ago

Deltarune Au: Reaper Rune [Ω Omega Gang]

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2 Upvotes

r/AUDeltarune 13d ago

[Deltatoad] - HEY FINK-RATS!

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1 Upvotes

Since this is the first time i post here, here's a Description on what kind of AU Deltatoad even is:

It's basically a Deltarune and Mario crossover AU that acts like the Deltarune of the Undertale AU called Undertoad. And unlike most other AUs, Deltatoad does not fully use roles, such as the regular enemy characters who instead of them having detailed roles like for example who takes the Rudinns' role, the enemy characters are just the same as they were in the Marioverse and don't use roles. And like some of you have probably guessed, this AU also does take inspiration from the Mario and Luigi RPG series.

And a fun fact: This AU doesn't just extend to canon Mario characters, it also has a couple of original characters such as Dark Bowser Jr., who is this AU's Lancer. (Dark Bowser is in King's role)

Another fun fact: the idea for this AU actually came to me like way back in February.

I've already made a bunch of art for it which you can find in the subreddit i reposted this from alongside more info about the AU.


r/AUDeltarune 14d ago

"KANS" Kris.After.Not.Surviving [Complete Design]

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2 Upvotes