Deltarune Theory. (Spoilers)

[ok]

At the end of undertale 1 genocide route, Chara says this "Let us erase this wolrd and move on to another". What if this is THAT world?
What if Chara-Frisk took took over Kris? You can clearly see that Chara took over Kris in the end of Deltarune. Sans also mentions that Kris is obbsesed with chocolate (Just like Chara was, it's not a big deal but it's something worth noting)

So here are the possibilties:

-This happens after the pacifist run (Would explain why monsers are on surface.

-This is an universe in which monsters won the war. (Would explain why we see no human on the surface)

-This is an universe in which humans and monsters never went to war in the first place (Would explain why Sans doesnt' know anyone, WOULDN'T EXPLAIN why sans is still in "dead inside" mode and why gribblys still exists.

Now this is my theory:

-This is any of the universes above (time will tell) after destroying undertale universe Chara and Frisk move to other wolrds to destroy them just like they destroyed that one. Maybe this would explain why sans was fighting so desperatly. This would also explain why you can hear gaster when you use the phone. Sans also says "As If we didn't meet before" even tho he said he doesn't know anyone in the town, and Kris clearly isn't Frisk. (What this means is there are probably bunch of universes in which all kind of different things happened in them)
Perhaps there is one in which one of the 6 kids that fell underground in undertale 1 survived, who knows?)

I don't know, share your theories down below we might be able to solve something out. This theory to me makes a lot of sense and is quite a possibility.

EDIT: This would explain why Asriel is alive despite turning back to flowey after pacifist run in undertale 1.

EDIT 2: In the beggining of deltarune someone (Maybe Chara)

Says this:

"Are you there?" -a soul appears

"Excellent"

"Let us begin"


Edit 3: undyne has 2 eyes as if her fights in the underground never happened

[MeAMoose]

Originally posted by (Edgy) Asriel Dreemurr:

Originally posted by Caelliox ☭:

Nah mate look up a definition of a timeline

But when you link a “timeline” to a game, you’re only talking about what can happen within the span of the game.

The changes that would lead to Deltarune’s universe lie outside of that timespan, so we can’t say it’s an alternate timeline of Undertale. So we call it an AU instead.

What i want to know is if any of the UT characters in DeltaRune even show signs of Frisk or Chara, and even then you need to match a place, date and time to when DeltaRune is set. If you can corolate a time match, i may have a working theory. If the dates and times match from the point of Frisk falling into the underground/leaving the underground as shown on the dates ingame and when DeltaRune is set, this may just be a different dimention rather than AU. If it is a different Dimention then this makes sense, The times all will be running at the sametime, Undertale will be left how YOU left it and time would go onwards in Deltarune. Toby refers to UT as a "world", so the Dimention theory still is viable. And even then, anytrace what so ever between Undertale and Deltarune INSIDE charactor dialogue would support this theory. What do you all think?

Also, Undertale and Deltarune are set with the same setting, so another theory extending from my previous is that there was only a SINGLE difference between universes/timelines/dimentions... there was no human war. Either this or the humans we're trapped underground. Eitherway it would still be inline with Undertales timeline of events and may actually work. From playing Undertale you can safely assume that you go in, through and out of the Underground in 1-2 days as you slept in Toriels house. Placing that timeline on Chaptor 1 of Deltarune means a single day has passed. Meaning if the next chaptor is a DAY long then this theory has some credabilty. Otherwise it's redundant.

[Casual Amateur]

Thank to Toby Fox said some thing about being non canon. It best to keep it non canon to Undertale. Other wise it can turn into another ugly flame war on debate. On what is true or false.

[Car distribution system]

Let's keep this big idea in mind--

We know that Sans is omniscient, he sort of knows everything across several timelines. However, where the story of Delta Rune takes place in this timeline we don't know, whether it occurs before or after Undertale, or if Undertale never existed. Regardless Sans will always know. I assume this will come into play later in the Delta Rune series.

What really keeps me up thinking about at night is in Sans' workshop.

In Undertale, after completing a set of challenges, another room can be accessed behind Sans and Papyrus' house. It seems to be some sort of workshop with a [Machine?] and some blueprints. There is also a drawer in the shelf, and this is very important.

Upon normally inspecting the first drawer, a picture of Sans being happy is described. However, after talking to Clam Girl, the inspection changes. Inspecting the drawer after talking to Clam girl will greet you with this text:

(There's a photo album inside the drawer.) (There are photos of... Huh?) (A card is sticking out from the back flap of the binder.) (It's a poorly drawn picture of three smiling people.) (Written on it...) "don't forget."

There are several different outcomes that can be discussed from this.

-The three people are Sans, Papyrus and Gaster, and "don't forget." could relate to something that all of them did together. After all they are the only skeletons in the game. (Assuming Gaster is a skeleton.)

-The three people are Ralsei, Susie, and Kris. "don't forget." could be referring to the adventure that goes on in Delta Rune Chapter 1, as some entity wants to make sure that someone should not forget that it was real?

I'm almost positive this photo relates to Delta Rune, I'm just not sure why.

[MeAMoose]

Originally posted by Microsoft Excel:

Let's keep this big idea in mind--

We know that Sans is omniscient, he sort of knows everything across several timelines. However, where the story of Delta Rune takes place in this timeline we don't know, whether it occurs before or after Undertale, or if Undertale never existed. Regardless Sans will always know. I assume this will come into play later in the Delta Rune series.

What really keeps me up thinking about at night is in Sans' workshop.

In Undertale, after completing a set of challenges, another room can be accessed behind Sans and Papyrus' house. It seems to be some sort of workshop with a [Machine?] and some blueprints. There is also a drawer in the shelf, and this is very important.

Upon normally inspecting the first drawer, a picture of Sans being happy is described. However, after talking to Clam Girl, the inspection changes. Inspecting the drawer after talking to Clam girl will greet you with this text:

(There's a photo album inside the drawer.) (There are photos of... Huh?) (A card is sticking out from the back flap of the binder.) (It's a poorly drawn picture of three smiling people.) (Written on it...) "don't forget."

There are several different outcomes that can be discussed from this.

-The three people are Sans, Papyrus and Gaster, and "don't forget." could relate to something that all of them did together. After all they are the only skeletons in the game. (Assuming Gaster is a skeleton.)

-The three people are Ralsei, Susie, and Kris. "don't forget." could be referring to the adventure that goes on in Delta Rune Chapter 1, as some entity wants to make sure that someone should not forget that it was real?

I'm almost positive this photo relates to Delta Rune, I'm just not sure why.

Honestly the easiest way to find out if the worlds are linked... FIND GASTER. Simple enough :P

[iSmile02]

Originally posted by (Edgy) Asriel Dreemurr:

Originally posted by rorgfist:

Toby fox answered a lot of stuff about deltarune, i will copy and paste some of his words:


I will say that basically, what you're seeing here is not the world of UNDERTALE.
UNDERTALE's world and ending are the same as however you left them.
If everyone was happy in your ending, the people in the UNDERTALE world will still be happy.
So, please don't worry about those characters, and that world. It will remain untouched.

To rephrase that, DELTARUNE's world is a different one.
With different characters, that have lived different lives.
A whole new story will happen...

I know it’s an alternate universe. But Sans in Undertale was hinted to be from another universe, and a lot of clues in his workshop point to him being from Deltarune’s. Basically it could be the same Sans (and possibly Papyrus) in both games because time travel shenanigans.

I recently saw a theory looking into this, and I believe it's very plausible.
For one, Sans is, I believe, the only character from the original Undertale without any changes in any of his sprites. The other returning characters all have some kind of alteration, like new clothes, or their talk-sprites look slightly different, but Sans is the only one who is completely unchanged (except for one or two new talk-sprite expressions).

Not only that, but the doors you can use to quickly access different areas in the Dark world are almost identical to Sans' bedroom door, both with the design of the door itself along with the orange and yellow flames coming from under it.

This could possibly be a prequel of some kind after all, just not in the way we'd expect. This might be the universe Sans and Papyrus originated from, and how they reach Undertale's universe might be a hidden subplot or something in future chapters.

(Also not that important, but I also saw a theory recently about how Susie is the alternate version of the Mad Dummy, since they're both actually very similar in appearance and personality. Not to mention, the Mad Dummy resides in about the same place where Clam Girl mentions her neighbor Suzy. Not too important, but still pretty cool to think about.)

[plznostep]

Originally posted by iSmile02:

Originally posted by (Edgy) Asriel Dreemurr:

I know it’s an alternate universe. But Sans in Undertale was hinted to be from another universe, and a lot of clues in his workshop point to him being from Deltarune’s. Basically it could be the same Sans (and possibly Papyrus) in both games because time travel shenanigans.

I recently saw a theory looking into this, and I believe it's very plausible.
For one, Sans is, I believe, the only character from the original Undertale without any changes in any of his sprites. The other returning characters all have some kind of alteration, like new clothes, or their talk-sprites look slightly different, but Sans is the only one who is completely unchanged (except for one or two new talk-sprite expressions).

Not only that, but the doors you can use to quickly access different areas in the Dark world are almost identical to Sans' bedroom door, both with the design of the door itself along with the orange and yellow flames coming from under it.

This could possibly be a prequel of some kind after all, just not in the way we'd expect. This might be the universe Sans and Papyrus originated from, and how they reach Undertale's universe might be a hidden subplot or something in future chapters.

(Also not that important, but I also saw a theory recently about how Susie is the alternate version of the Mad Dummy, since they're both actually very similar in appearance and personality. Not to mention, the Mad Dummy resides in about the same place where Clam Girl mentions her neighbor Suzy. Not too important, but still pretty cool to think about.)

I agree to this, and maybe this is where Gaster is related to the events, we know Gaster has some relation to Sans (because the Gaster Blaster) so it might explain Gasters backstory as well.

[CTheRex]

also I tried naking myself "GASTER" in Deltarune and guess what! It reloaded the beginning. Try it yourself.