We already have t-shirt in Undertale segment called "Delta rune" and as i remember it was before Deltarune release.

So can it be, that "darkheart" is also foreshadowing for anything?

Also, the secret bosses are becoming more and more UT related with each chapter

This theory is going to be really easy to understand if youve seen the attached gumball episode but if you havent I'll explain briefly.

in an episode of gumball, the kids realize that certain things are missing from where they should be such as locker numbers skipping a number, her house where it should be doesnt exist. Then they find a picture that has an outline of the shape of a girl thats filled in with static which makes them remember their friend who used to be the missing girl in the picture, the owner of the missing locker and the missing house.

This plotline feels like it perfectly parallels what might be going on with gaster.

Firstly all the hometown residents in deltarune have similar jobs to what they had in undertale:
Undyne from a knight to a cop, alphys from a scientist to a teacher, toriel going from nurturing fallen human children to being a teacher, sans going from a vendor to a vendor.

Everyone in hometown is similar to their undertale personalities and intirests, so gaster, another scientist working at the hospital feels like a perfect match. Yet we dont see any doctors in deltarune, only the secretary at the desk.

In chapter 4's forgotten man scene it is revealed that the man is a doctor (or so I believe) with them having a therapy session with kris, kris obviously remembers this moment but not the man itself.

If gaster is the supposed doctor then it perfectly explains why Kris wouldn't remember them.

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Also Kris randomly dissapearing into random areas without susie or ralsei ever pointing it out makes me think that the egg man scenes entirely take place in Kris' mind since once they are over Kris is spit back out into wherever the sequence starts.

It would also explain why the real gaster doesnt want you collecting the eggs since it might culminate in you finally remembering gaster before deltarune's events. Just like how gumball and darwin remember Molly (the missing girl) once they learn enough events hinting at her existence.

Another really weird thing in chapter 5 is how susie points out how she doesnt remember what was in place of sans' house before he moved in, just like how in the gumball episode, Molly's house is missing and the gap is filled in with the other houses moving to cover its place.

If the fact that gaster used to be in hometown wasnt supposed to be hinted towards why would this random line be included about how susie doesnt remember what came before deltarune.

One last piece of theory is that gaster's existence being acknowledged is already seen as an "issue" within the game, the game restarting if you type in your name as gaster makes the program reset meaning gaster cannot be part of the experiment in any way, and if you collect an egg in any chapter you dont get the playstation trophy saying "Chapter completed without issue". So gaster really sees it as an issue that he is acknowledged in the program.

So I believe people were right that the egg man is gaster- he wasnt literaly gaster but rather what Kris is trying to remember about HIM.

This was a wild ride. To say the least. The tension between Kris and the Soul is insane. Suselle is my favorite ship. Sans "befriending" toriel was the first thing that made me laugh. I am a Ralsei simp. I believe that Dess is The Roaring Knight. My favorite character is Ralsei. Lancer is my second favorite and Berdly to me, is "That fucking bird that I hate". This was an amazing game. 5 stars, would totally recommend. This was my first playthrough, avoiding spoilers since chapter one. This was very fun.

Btw, I used Omega Flowey's face only to provide a bit of context for the subject.

People like to talk about every chapter representing different forms of escapism. Namely, they are games, the internet, TV, religion, and nostalgia. I think there are debates to be had about the exact truthfulness of this (games is repeated in chapter 3 more than representing TV), but more importantly, one chapter cannot fit into this at all.

Chapter 4’s entire purpose in the storyline is to bring a radical shift to the game in terms of vibes, plot, and theme. Chapters 1, 2, 3, and 5 all feature a main antagonist who is trying to keep their Dark World open. I’d also add that these characters usually represent the purported forms of escapism (King is a standard villain which represents games, Queen embodies the Internet as a fast laptop, Tenna is the TV, Flowery is a callback to Asgore’s college days and marriage & to Undertale). Chapter 4 does not. You could argue the Knight fits the role, but they are untraditional as a chapter antagonist in many ways, which moreso adds to the ways Ch4 is a subversion.

I understand why people thought it would be escapism through religion in the pre-Chs.3&4 era, but looking at the plot of the chapter, this is not at all an accurate assessment. If anything, rather than bringing comfort to the Fun Gang, the Prophecy itself is the antagonist of the chapter, showing how the characters may not have free will and are destined to be apart of a predetermined set path. The characters aren’t escaping from anything: They are actively being confronted with the realest shit they’ve dealt with in the Dark Worlds. It is true that the forms of escapism are represented by the antagonists of each chapter, but at least the protagonists are having fun during the gameplay of the chapter. During Chapter 4, Susie is learning things about the nature of her world she wishes weren’t true.

I think Chapter 4 is trying to break this theme of escapism. Either that, or Toby Fox is trying to say something about real-world religion in his silly little JRPG. (That’s definitely not true, considering that it’s an invented religion specifically tied to the game’s plot.) The point is, a theme doesn’t have to be directly demonstrated in every single part of a story. The inversion is also important for a good plot, and we can’t dumb that aspect down in our analysis.

I'm actually not sure if this has been discussed already or if there are some videos on it, but here goes. I may be missing something here, but I just can't wrap my head around it.

tl;dr How did the Knight create the Lobby AND Church Hall fountains while in a locked room? If they were already inside the hall at the start, they couldn't go out to make the Lobby Fountain, much less show up in the first dark world. If they were outside the hall initially, how did they enter the hall, then lock the door from the inside, if the padlock is outside? Maybe they had another accomplice besides Kris?

First off, its a pretty common theory that after sealing the Church Main Hall Fountain (Third Sanctuary), the Knight is still in the back closet of the Hall. The one that Kris refuses to open. The fact that there's special narration for this at all heavily supports that theory. Hell, they might've been there from the start. For the sake of discussion, let's assume this is true. Let's also assume that the Knight is a Lightner, and they exist in the Light World.

Then, the Church locked door makes the existence of two fountains very weird, given that the door was locked between those two rooms. When was the number padlock added to the Lobby door? The fire extinguisher has the code, so people related to the Church own this padlock. Alvin and maybe Toriel probably use it to secure the Church as they leave.

If The Knight was already in the locked Hall from the start...

Let's assume the Knight went inside the closet at some point, stayed there until after the church service, then waited for Alvin to add the padlock when closing up, unknowingly locked the Knight in there, allowing them to open the Fountain in the Church Hall once the coast was clear.

This creates an issue: how was the Lobby Fountain (First Sanctuary) created, while the Knight is locked inside the Hall? If the door is locked from the outside, the Knight cant open the door to the Lobby in the Light World to open another fountain. From what we've seen in Chapter 4 at least, its pretty unlikely they got Kris to do it, given they were busy in Castle Town, Noelle's house, the Diner (etc). And they were with Susie the whole time, while we watched. Incidentally, Ralsei comments on this:

"the original Dark World... Was formed partially of the fountain inside there, too."
"The Knight's two fountains..."
"So, it makes sense... it would be a similar world as before."

So, the Knight made it. Its not like the darkness just spilled through the door crack either - Ralsei clearly says there are two fountains. Before Susie made the Second Sanctuary Fountain, despite the darkness seeping out from the Hall, there is a clear distinction that Susie and Kris are in the lobby in the Light World, outside the Hall Dark World.

I interpret this "formed partially" statement as, two fountains were opened separately, with darkness from the Hall Fountain simply linking with the Lobby fountain through the cracks under the door, so certain areas are formed partially from both fountains. But again, how would the Knight open the fountain in the Lobby if they were already locked inside? How do we even see them in the first dark world if this was the case? That seems impossible.

If the Knight was in the Lobby first, then went into the locked Hall after...

Okay, so maybe, the Knight was initially in the Lobby and opened the Lobby Fountain, and was hiding somewhere like the office or the storage area, as Kris and Susie entered. After all, this is what we initially assume, as we see the Knight and the Fountain immediately upon entering the Dark World. When they chased the Knight in the Dark World and the Knight somehow enters then locks the Grand Door on them, maybe that's the moment the padlock was added to the door.

But in the Light World, the padlock is on the lobby side of the door - where Kris and Susie are. Its a separate sprite from the door, seen only at nighttime after sealing the first fountain. Even if the Knight knew about the fire extinguisher and the padlock and wanted to use it to lock the room, the Knight cannot lock themself in the Hall if the padlock is on the other side. Maybe Kris speedran adding the lock after sealing the fountain with Susie somehow not noticing? This is what really stumps me. It seems most likely the Knight was in the Lobby first, but I can't understand how they entered the room then added this padlock.

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Either way, I find it difficult to explain the specifics of how the Knight made both fountains, assuming the rules we know of the Light World and Dark World apply to them. The most likely option I can think of to explain this is they had an accomplice. This accomplice either helped unlock/relock the door after the Lobby Fountain was made or this accomplice made the Lobby Fountain, and was somehow able to create a similar Dark World to the Knight because they had similar "will". Or theres somehow multiple knights

Or maybe there's some hidden passage between the lobby and the closet, or maybe the Knight can simply lock the padlock from inside somehow. Or maybe I'm overthinking this and there's something I missed, or there's some unknown Dark World shenanigans that can explain this. I don't think we even know the reason the church was chosen as a Dark World location, much less why there's two fountains.

What do you guys think?

So, Ralsei told that everything in the dark world is just an illusion of darkness, and everything is not real. Then how do darkners can kill the fun gang in battle then if in the end, they are just object, like a card or a laptop can kill you?

This explains so much, obviously why ralsei doesn't turn to stone outside his home fountain because he helps Susie and Kris with the prophecy and(this is a bit of a strech) why he doesn't want Susie and Kris figuring out the prophecy, also there's lancer turning to stone in chapter 2 because he was just around but in chapter 3 he was helping with the gameshow.

PLEASE help me find more evidence for this

I tried to post in another sub, but it was auto deleted bc i have low karma

There’s been a lot of debate over whether Kris is turning grey or green, as though it has to be one or the other, but BOTH can be true.

Kris’s is originally a sort of golden yellow and when desaturated, passing through muted yellow, then olive, before reaching a sort of pale greenish-grey, before becoming full grey.

So regardless of either truth (Kris being Sick or becoming a Goner without a SOUL) both colors can happen, i think Toby didnt mean for this but probably doesnt mind it because the truth of WHATEVER is going on with Kris will be revealed in the next two chapters

If Papyrus is actually from deltarune, same as sans, then we (as kris at least) won’t see him. Which makes me believe that the weird route might actually be the canon route, and kris actually died in the lake.

HELLO SANFRANDISCOOOOO!
heres my theory

DARK WORLD beneath lake
ABYSS beneath dark world, but where they intersect its empty space. the ninth dimension essentially, physics screws you over, into a theoretical 'dark world abyss' (abyss)
The abyss, contains multiple things. meat factory (vessel creation). The vessel is then sent to a different realm

deltarune is a prequel.
there is much proof.
PUNCH CARD, 3 people - weird route (one room in sans' house*
sans was NEWLY arrived in snwodin, this suggests travel,
Kris rejects the soul. resulting in it ending up in undertale through some means

here is my theory. (kriselle knight)
amalgamation
combined in meat factory

its a mishmash of ideas aside from first one

i just realised something and i know its quite stupid but, have we ever heard the egg man being called "him"? from what ive seen he is only referred by "he", well "HE is behind the tree"
i may be wrong and he have been addressed with something other than he but ive never seen the forgotten man being referred to by "him"
and as we know, he/him are parallels to each other, and we only know gaster by "him"

what im trying to get is that could the big G and the forgotten man be the same "thing" or person but separate versions
i butchered what i had in mind but i hope it went through yall's head
its a far shot but its fun to think about it

I have been hearing quite a bit of discussion regarding the flowers from Chapter 5 and their human soul counterparts from Undertale. The issue is that the flowers demonstrate actions that are the complete opposite of their respective traits (i.e. Blue being dishonest to Green about the $2, Aqua getting bored of using the same attack, Yellow turning a blind eye to parsley, etc). This got me thinking...

What if the flowers are meant to TEST those certain traits rather than embody the traits themselves?

Take Aqua as an example. Her, along with Flowery, are the most prominent flowers in the entire chapter. You meet her first and see her all throughout your trip up to Flower Castle. As she is aqua, it's assumed her trait is patience, however she seems to test our patience. While I thoroughly enjoy her as a character, the knifes and bullet patterns she has scattered around can be quite cumbersome when going through the 2D sections. Additionally, you fight her the most out of all of the flowers. Despite being a lovely part of the chapter, she tests your patience.

Another, albeit more obvious, example is Blue. He actively encourages you to have integrity and tell him the truth concerning Yellow, despite the fact that the evidence looks bad against you. While this delves more into theory, him taking Susie away to discuss what flowers Noelle would like also tests our integrity as the player. This is a private chat that we have the choice to eavesdrop on, but can choose not to.

I would love to hear other people's opinions on this in the comments! Thank you for reading

Hear me out, so the knight is an amalgamation of noelle cuz she dies in chapter 7 during the roaring on side c (some may call it the sword route) and they use the twisted sword to put determination in noelle's dust making the roaring knight who goes back in time using sans time machine with an irresistible urge to start the roaring. Which is why the roaring knight always know when the fun gang is in a dark world.

TL;DR: The Delta Rune suggests that Ralsei will die, that Krusielle will become cannon and shows how Kris is a double agent.

The Delta Rune is definitely a very cryptic symbol based on its origins and what it is intended to represent.

In UNDERTALE, it represented an Angel, who would descend upon the underground and leave it empty. This both happens in the genocide route and the pacifist route. It appears all throughout the game.

However, it has to mean more in Deltarune, considering it is literally the name of the game. It has to mean something else, a double meaning.

Double interpretations appear all throughout Toby Fox games. In UNDERTALE, “But it refused” means both that the soul refused to die, and that it literally re-fused into a soul again. There is also likely more than one route of the game of DELTARUNE because of multiple interpretations of the Prophecy. “The Girl” may be either Susie or Noelle based on the route you choose.

So, the Delta Rune definitely means more than its UNDERTALE meaning, and it is highly connected to the Prophecy, the story of the heroes of the game.

The Delta Rune represents the heroes.

Kris, Susie, Ralsei, and Noelle can fit all of the shapes within the Delta Rune (the three triangles and the Angel)

The Angel could be Ralsei, because Ralsei may end up dead, looking over the remaining Lightners. And the Angel could be Noelle, because Noelle may be the Angel of the story.

The three triangles could be Kris, Susie and Ralsei, where Susie and Ralsei are pointed towards Noelle or the soul, but Kris is secretly working with the Knight and looking away from Noelle or the soul.

The three triangles could be Kris, Susie and Noelle, and Ralsei may end up dead as the Angel and since there is clearly a lot of romantic tension between the lightners, Susie and Noelle are the two identical triangles, while Kris is the third wheel and is upside down.

I can’t really draw any great parallels as to why Kris, Ralsei and Noelle or Susie, Ralsei and Noelle could fit as the triangles, and why Susie or Kris could fit as the Angel.

Am I looking into this too much? Yes. Yes I am. It’s just something that crossed my mind today.

However, these interpretations both point to Ralsei ending up dead, Krusielle becoming cannon, and to Kris being a double agent.

Kris being a double agent only works when you put Noelle as the Angel, but I feel like there could be more to this interpretation. It makes a lot more sense if the Soul is the Angel, but then where would Noelle be?

Anyways, this would provide some pretty crazy lore but also is incredibly niche and has little evidence, so it’s a crack pot theory for a reason.

HI !!!

I AM BACK WITH ANOTHER QUESTION GUYSSS…

I figure out what attack i get stuck on and i have pictures of what i am stuck on.

First- kris.

Second picture- i get stuck in a corner and they are chasing me than i get damage a lot cuz i freak out.

Third- why is there three fishes. Iam so lost, and each time when i move, its always there and i get hit by it and die.

any tips again or whatever is greatly appreciated.

Also i dont have the black shard or Susie axe.

So, this post is more of a rambling and a collection of theories regarding the next chapters. I've had this theory a little after we got the trailer in the Nintendo Direct, and playing Chapter 5 only made me more sure about it. But to summarize, this is the theory:

The three chapters before Chapter 4 parallel the three chapters after it, in a lot of ways. I say that because of some things we saw.

Well, Chapter 1 and 5 share a lot of stuff, to a point where a whole area uses the same art, but with a different color. The name of the tracks, the shopkeeper giving us a key to the secret boss, a ton of Jevil references (and even his name being said by Ralsei), Ralsei's hat, and the fact that it was in chapter 1 when we first saw the Forgotten Man, while in Chapter 5 it was the last one, even playing Scarlet Forest at the exact moment. There are other stuff, but I need to make my point.

I believe that Chapter 6 will parallel Chapter 2, and Chapter 7 will parallel Chapter 3. Chapter 4 would be like a glass that reflects a little, but not completely. This is because it's the "halfway mark" and it has a lot of glass imagery. I'd say it's a mirror, but for the chapters to be mirrored, it had to be 1-7, 2-6 and 3-5. In this case, it is 1-5, 2-6 and 3-7.

To complement the arguments for Chapter 2, see this Batalax's video regarding Carol and the Ice Palace: https://youtu.be/BXdBKUUD1tA?si=SA2cz-P1T1KKemWk . But the idea is that in Chapter 6 the Dark World will be the in the Holiday Manor, transforming it in the Ice Palace we hear so often. The main evidence is how much Queen and Carol relate to each other. They both are mother figures, apparently care about Noelle but are a little too tyranical, hurting Noelle in the process, GLACEIR and Elegant Entrance being way too similar, Pandora Palace being a parallel for Ice Palace, among other things. I also believe this is the case because of what happened to Rudy. I know he's probably in the hospital, but anyways. Susie also says that she wants Noelle to be part of everything, so imagine she makes the dark world (based on what Queen said in Chapter 2) to try to heal Rudy, and the end of it starts the Roaring?

Well, more evidence of a possible Ice Palace Dark World is also coincidentally in Chapter 2. Noelle is playing Dragon Blazers III with Rudy in the hospital, and she is at the Ice Palace fighting the Silverdrake. She also says that the mage who knows Fireshock is absent from the party. She tries to use Iceshock, but Rudy tells her to use Blaze Potions, but the enemy reflects it. We know that the "original game" in Chapter 3 is supposed to be Dragon Blazers, and if it really foreshadows the whole game (like the golden flower torn in half), then before we enter the shelter we go to the Ice Palace with Noelle. Noelle has a lot to do with Spamton and Friend, so this is also very, very interesting. A blue soul mode would fit perfectly, with the themes of ice and elegance, just like a cyan one. Because well, being frozen in place surely takes a lot of patience.

Now, about Chapter 7, the previous evidences also help us a lot to predict it. I believe that we will finally go to the Depths, not mattering if by the Lake or by the Shelter. Go see Roots Theory: https://youtu.be/n8WHKVwAw00?si=xv0SgJWgTLhVKNoo . Well, the evidences are also linked to the original game. In the last segment, we fight a lot of monsters that are very recognizable, break some trees, and enter the Shelter. In there, right at the end of the game, we fight against a shadowy figure (like the knight) that uses Friend as one of its attacks. It's possible we will also enter there through the lake (Toilet Theory, aligning with what Flowery said before he died: https://youtu.be/pdvPRc01aTU?si=JtEif-XjCfUkX2sA ). There aren't a lot of evidences here, so I will invent some right now. In Chapter 3, we found out that the Shelter has a Dark World, and it opens with three codes. The first code we got in Chapter 4, the second one we found in Chapter 5, and I believe that the third one we'll get in Chapter 6, maybe opening the shelter at the end, and exploring it in Chapter 7. Again, we may enter it by the Lake in the Weird Route, since we know we skip Chapter 6 completely in it.

Whatever Friend might be, I believe that the Shadow Crystals (and the Pure Crystal) will be used to make something related to it. We wouldn't obviously have it as a shadow crystal boss in Chapter 6, but what if we are collecting them to make us stronger to fight a last "Secret Boss", that will give us a similar item like the Shadow Mantle? Remember Friend appeared in the ERAM fight. And after we get this strong item, we'd use it to fight the final boss of the game (if it is Gaster or not) or maybe a last Secret Boss, that will give us lore about the metanarrative (and possibly a connection to Undertale. That may be Gaster, but who knows?

It's long and probably not so many will read it, but these are my two cents. It's my first post ever. I gathered clues in a lot of theory videos by so many good creators, I commented in some of them this theory, but at the end, I'm happy with whatever Toby gives us. He likes to break patterns, and this is what I love about the games. I'm sorry if I made any grammar mistakes. English is not my first language. Be respectful and share your theories as well!