Game Theory: This is NOT Your Story! | The Deltarune Undertale Connection

  • Published on Dec 4, 2018
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    The Tragedy of Deltarune ►
    Who is W.D. Gaster? (Undertale) ►
    Special thanks to Whynne again as well as Geoff from Mother's Basement for helping me work through all the bits and pieces of this huge series of three theories!
    Also, special thanks to itsmeveronica for usage of their custom Ralsei crying animation ►►1:07
    The biggest mystery of Deltarune is how it connects to Undertale. Is it a prequel? A sequel? Something completely different? Today Loyal Theorists, I am here to help you solve this mystery. What is Deltarune? Oh boy, do I have an answer for you!
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    #DeltaRune #Undertale #TobyFox #Kris #Chara #DeltaruneTheory #Charity #Susie #Rasiel #Lancer #Sans #GameTheory
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Comments • 19 258

  • Stari Art And Animations *

    tbh i thought the grave stones could have been maybe muffet the spider, papyrus and someone else cuz you know we never see them in the game right? i mean a bone and spider web it makes sense! look in to it!

  • iRaymond XD
    iRaymond XD 16 hours ago

    Deltarune is not Undertale 2
    Deltarune is a Different game
    Ir may take place in past
    Before Undertale
    When You play as Chara
    And She died at the end of the final Chapter ...
    But anyway
    I 70% Belive that this is not "Undertale 2 " and 30% Belive IT is but it Don't makes any sense !
    Anyway Hope You like My Theory

  • Jay Gaming
    Jay Gaming 17 hours ago

    I didn’t know there was an intro

  • Jolts the Pichu!
    Jolts the Pichu! 22 hours ago

    "Toriel still loves kids."

  • Neo Eonoe
    Neo Eonoe 22 hours ago

    In undertale humans are assumed to be concidered regular humans just like us in real life because monsters dissapeared from everyone's memorys amd yhe war never had to happen even more so after forgetting that a war ever took place.
    But in delta rune, humans and monsters never lived. A life of trifles between races, at least not

  • Oliver Tikoff
    Oliver Tikoff Day ago

    ♡ I promise to remember Sans when someone makes a joke.
    ♡ I promise to remember Papyrus when someone makes spaghetti.
    ♡ I promise to remember Undyne whenever I want to feel brave.
    ♡ I promise to remember Alphys when someone is talking nerd junk and anime.
    ♡ I promise to remember Toriel when making a pie.
    ♡ I promise to remember Napstablook whenever I feel like trash.
    ♡ I promise to remember Mettaton when I'm on stage.
    ♡ I promise to remember Asgore whenever I'm around flowers.
    ♡ I promise to remember Flowey when I call someone an idiot.
    ♡ I promise to remember Omega Flowey when someone tries to scare me.
    ♡I promise to remember Asriel whenever I cry.
    ♡ I promise to remember Frisk when making a poker face.
    ♡ I promise to remember Chara when I really want to fight someone.
    ♡ True Undertale fans would repost this..
    ♡ Others will not.
    ♡ Stay Determined, My Child..
    ~ Normal people say go to Hell. We say "Kids like you should be burning in Hell."
    ~ Normal people say do you wanna go? We say "Do you wanna have a bad time?"
    ~ Normal people are afraid of monsters in their closets. We're protected by ours.
    ~ Normal people will ignore this. Undertale fans will repost it.

  • Peter Griffin
    Peter Griffin Day ago

    (Writing this before watching the entire video) Wait, what if Undertale is another imaginary game that Kris and Asriel made up? That would explain Asriel being the final boss in the pacifist route, being like a dungeon master, and how both Chara and Asriel have the same sweater as Kris. Also the small similarities between Kris, Frisk, and Chara. They were his imaginary chacters when he was younger, based off himself. In Deltarune, Undyne is a police officer, a law enforcer. and in Undertale, the same thing, just much more fighting involved. Toriel is the queen becouse she is Asriel and Kris's mom, same for Asgore. Alphys is the royal scientist becouse she is a teacher, someone seen as really smart to a young kid. It would also explain the system in Undertale. Take DnD for example, you can either talk to someone, or fight them depending on what you want to do. Same for Undertale. Undertale is another one of Asriel and Kris's games confirmed!

  • Pauline Chu
    Pauline Chu Day ago

    Long Intro MatPat

    JAYDEN EWING Day ago

    It could be a prequel because monsters and humans used to live in harmony.

  • Cheeky Serious
    Cheeky Serious Day ago

    Why is this in the voice crack songs playlist?

  • BOSS-A-TRON 9000

    No one:
    Did you get theory wear?

  • PixelMaster
    PixelMaster Day ago +2

    Really MatPat?Really?Kris is a boy (if you are a boy),or a girl (if you are a girl).
    Ok?Ok. That's done!

    Also,deltarune is just a different timeline.
    Oh sorry I almost forgot,ahem...

    But that's just a theory,a game theory! Thanks for reading this!
    Heh,nailed it.

  • Hellish Animations

    GOD I hate deltarune gor some weird reason... But i love undertale

  • WoomyQueen14
    WoomyQueen14 Day ago

    gaster invaded the intro!

  • Edwin Renck
    Edwin Renck Day ago

    lol playing undertale and killing every one but the dogs

  • Hannah Pilkey
    Hannah Pilkey Day ago

    Hey, MatPat, I know you're not gonna see this in the flood of comments you get so often, but if you do, I think I have an Undertale theory that I'm certain no one has ever covered before.

    Basically, the main idea of it is "Chara is us". Not literally, but Chara represents us, the player. I have some points below that work as evidence/speculation.
    - When Chara says "Since when were you the one in control" I always thought it meant CHARA was the player talking to the in-game avatar, which has a name, will, and personality. YOU are talking to the avatar. And if you chose an option, and frisk looked back at you and said "I don't want to do that", the natural response is "when were you the one in control?" And afterwards, we all blamed chara for OUR actions, like Chara says to frisk "you destroyed the world".
    - Whether Frisk wants to or not, you are the will behind their actions, guiding them with your determination. And guess who else is the embodiment of Determination? Chara.
    - Another little nod from Toby is that most people put in their own name when asked to "Name the fallen human". So, when Chara pops up and says to you "I am MatPat" it's because they are the representitive of you.
    - proof that characters have their own will at the end of deltarune, kris pulls out his heart and puts it in the cage. we can still move it if we try. Around the town every npc has said that kris is acting differently. and that's because theyre being controlled by you and your determination. but now they're rejecting your control. why kris can do that and frisk can't is still up for debate.
    - there's still the argument about chara controlling your actions in the genocide run, but that's because chara isn't actually us. She represents us. Actually, there's a larger theory at work that says perhaps the player is controlling Frisk through Chara the whole time, and only on the genocide run do they get enough power to reject your control. And because of your corruption, Chara has become like you, the player, taken on your tendencies to exert your will over others and to blame them when things go ary. They have become so much like you that they take on your name (since most people are meant to put in their own name). They think they ARE you. They believe they are you. You have been one entity for too long.

    You're welcome to use this theory as you like. I don't ask for credit. If you wanna discuss more, just ask for my email. Feel free to add your own stuff. I just figured this would be a good way to help you ride the Deltarune hype (which has long ended).
    Honestly, I'm pretty much sure you only take theory ideas from patrons, but I don't really have any money, I'm sorry.

  • Halit Efe Önder
    Halit Efe Önder 2 days ago

    13:30 that ain’t Blooky’s house,it’s Mettaton’s house.Mettaton is still a ghost because they didn’t need to have an Anti-human Robot.

  • Skidadoodle Skidoodle You’re **** is now a noodle

    It took a looooong time for Matpat to get to the intro. Heck I thought we’d already started

    NAR7GAMER 2 days ago

    Why do people hate every theory of undertale serise

  • GachaEmerald
    GachaEmerald 2 days ago

    If it happens before undertale why does toriel metion asreal and toriel is pissedm as asgore still explan mat pat, EXPLAN!!

  • Dark Kaneki
    Dark Kaneki 3 days ago

    wait isnt there a pic of the monster and human fight in undertale and i am just wondering why is the guy facing asgore look like kris???

  • Keller McCluskey
    Keller McCluskey 3 days ago

    Longest intro in game theory!? (Ending at 4:29)

  • Demented Duskull
    Demented Duskull 3 days ago

    8:38 it's Dreemurr, not Dreemur. You can remember by keeping in mind that Dreemurr is an anagram of Murderer, which has three Rs, not two.

  • Isaac Anders
    Isaac Anders 3 days ago

    MatPat: "How much time ya got?"
    My brain: *Jacksepticeye saying do you have 90 minutes*

  • SplatterDJ
    SplatterDJ 3 days ago

    😑/ 😮_ boi Kris is no a girl

    (Edit) I laughed so hard

  • potato lord
    potato lord 3 days ago

    MatPat:Alternate Universe
    the whole undertale fandom:lets explain the au's to matpat underswap, undefell etc

  • Drew The Champ Studios

    Matpat you're a flipping genius

  • EdyS.
    EdyS. 4 days ago

    6:36 Yay! I won't sleep anymore for like 2 weeks... Thanks, MatPat! :))

  • Bon Fayar
    Bon Fayar 4 days ago +1


  • Random Undertale Fan

    Burgerpants is literally squidward

  • CE_2438
    CE_2438 4 days ago

    So basically Susie was the annoying chaotic evil who attack everything and ruin ur dnd experience

  • Dark anti
    Dark anti 4 days ago +1

    MatPat: How much time you got?
    Me: 90 minutes

  • Enough of Eli
    Enough of Eli 4 days ago

    What about the turtle drawing when they get back to the classroom?

  • pixel_lord 666
    pixel_lord 666 4 days ago

    13:12 I think that's a g follower in the car on the left

  • Frisk Dreemurr
    Frisk Dreemurr 4 days ago

    Or maybe genderless

  • Frisk Dreemurr
    Frisk Dreemurr 4 days ago

    Kris is a boy

  • renate gamer2580
    renate gamer2580 4 days ago +1

    Ok, lemme share a lil bit.
    Undertale: the flames under sans his room door
    Deltarune: the fast travel door flames
    They are the same, and how does sans get everywhere all the time? The door is some way of fast travelling over worlds.

  • KatTheNeko
    KatTheNeko 4 days ago

    I got jumpscared by Jevil when he popped up saying "CHAOS" xD

  • clantertay the wolf deamon

    Aye,matpat,I know you might have not noticed this. But,you called Kris a girl a few times in the start. but I still love you're work,keep it up!

  • My Dud3_
    My Dud3_ 5 days ago

    I will actually go insane if ch 2 doesn’t come out (or ch3 bcuz deltarune is a sequel to undertale)

  • xUwUx
    xUwUx 5 days ago

    I was an undertale fan i just knew about deltarune
    And i thought it was just a fangame

    I guess you could say im pretty retarded

  • T-Pie
    T-Pie 5 days ago

    2:34 Susie steps on a lego

    • T-Pie
      T-Pie 5 days ago

      Or they fixed her eye (?)

    • T-Pie
      T-Pie 5 days ago

      Also I’m assuming that the monsters are on the surface and undyne has both eyes is that this is pre-war. Sorry didn’t watch whole vid yet.

    • T-Pie
      T-Pie 5 days ago

      2:30 works better

  • Trianna Baker
    Trianna Baker 5 days ago

    I have a question! If this is undertale if the war never broke out. Chara and frisk exist! So will we see them? I’m wondering if there is a connection somewhere!

  • Sidney Mew
    Sidney Mew 5 days ago

    So.. Toby Fox is the father of sans and Pap?? Seems legit..

  • Lightwood Bane
    Lightwood Bane 5 days ago

    I'm so mind-fucked right now. What the hell this makes so much sense!!!

  • Red Omega
    Red Omega 5 days ago

    I used this be a murderhobo i was playing a game of titans grave for about 3 months and I’m gonna give one example of many so my party consisting of like 7 or 8 people I was a magic user at the time and I had a alchemy ability so I could make potions and stuff and I took every measure to somehow kill these two merchants

  • Henry Boudreaux
    Henry Boudreaux 5 days ago

    I bet the person pulling the strings is le doggo

  • Asheley Johnson
    Asheley Johnson 5 days ago

    Weirdest thing to me. The clam girl in undertale talks about "Suzie" and says "I feel you two should be friends" and "fate finds a way." What she said technically does come to pass in a different timeline. And that she is from "Synchronicity" which means: the simultaneous occurrence of events which appear significantly related but have no discernable casual connection........I love it!

  • Ritvik Mishra
    Ritvik Mishra 5 days ago

    Here we go again

  • TheBombyMaster2 Or Rocket The Space Pup

    Question 3...

  • Evangeline Eveningwolf

    I belive Deltarune is an alt universe where the monsters won the battle between humans and monsters and the humans were sent underground, that's why there's monsters on the surface, but no humans. That's pretty much the theory but the war did happen

  • jayden locke
    jayden locke 6 days ago

    that genuinely just had my mind blown.

  • Keiti .com_
    Keiti .com_ 6 days ago +1

    The only thing about deltarune that im mad about is that Alphys and Undyne don't know/like eachother

  • Rainbow Ingot
    Rainbow Ingot 6 days ago

    Jeez it kinda took a while for you to know that you Kris and the player is separate and she doesn’t want you to make her/his decisions.

  • Summ D
    Summ D 6 days ago

    I have a correction.....

    The whole reason In undertale that They got "divorced" (never truly divorced), was because after Asriel (& basically chara) died, he declaired that every human that fell down there would be killed so they could use their souls to BREAK the barrier. Toriel, enraged at hearing this, left asgore to rule as a lone king. As Toriel set of, she went into the ruins. She was, well, Going to protect every human that fell down there from ASGORE.
    Sorry If I'm wrong.

  • 12345die
    12345die 7 days ago

    I heard you called this a mega theory did you forget about the fnaf theorys

  • Fist Power
    Fist Power 7 days ago

    Did he just assume kris's gender?

  • Julian Archila
    Julian Archila 7 days ago +2

    Me:Oh it's gonna be a Q's and A's
    Matpat: How is this game related to undertale?
    Me: idk
    Matpat: Now that gonna be our theory today!
    Me: Damn it....

  • geno sans
    geno sans 7 days ago

    asriel actually means the prince god sooo that makes sense
    toriel's and asgore's divorce "I am inevitable"

  • Max McNeil
    Max McNeil 7 days ago

    The multiple portions of Deltarune (the chapters) could be separate outcomes of Undertale runs. For example, doing a perfect genocide run could lead to chapter 3, or something. Your decisions in Undertale make prequels in Deltarune or vise versa

  • Shelby Kennedy
    Shelby Kennedy 8 days ago

    its been 4 minets ROLL THE INTRO!!!!!!

  • 134340
    134340 8 days ago

    Kris didn't rip her heart out she took her soul out

  • awesome killer boy
    awesome killer boy 8 days ago

    The voice talking to you is actually jevil

  • Cr⊗ssy
    Cr⊗ssy 9 days ago

    In my theory, that's not gaster who pulles the strings here. As we can well see in the dialouge with sans, the character specific fonts are still a thing in there, therefor the font used in the begining of the game is not what would gaster use. He uses windings, and i know what y'all thinking, if this would be wrote in windings then the over all thing would too easy to solve. And thats right, i can accept it, BUT, and this is a freaking huge BUT, why would gaster spoke to us? How can we, as a player can understand him NOW. We have never been able to... And now here comes my theory, what if the one who had spoken at the begining is frisk or chara? They are too capable to manipulate the timelinesm they can save and reload, and they were the ones whom we can be connected with. What if deltarune is something like a corrupted file made by someone who wanted the peace more then anything else, and was capable to make a timeline/file/world where the peace and happines is the main thing. I think this chara or frisk who is behind all of this, but this is only my oppinion :D

  • shadow dragon
    shadow dragon 9 days ago

    Damn it if this confirms all the undertale AUs.... except mafiatale. Thats awesome.

  • Travis Romero
    Travis Romero 9 days ago

    Can Undertale be a game from Kris? It seems like she might just see the universe of Deltarune like this. We may already see chapter seven in Undertale. Keep in mind I haven't played Deltarune and I'e just gotten into Gametheory for Deltarune

    • Travis Romero
      Travis Romero 9 days ago

      Like, Undertales character is just younger Kris. These are her original games that she played with her brother before college. Her brother is just giving her a really intense DnD session. Her imagination is off the charts and is being manipulated by her brother and it takes her a bit to get going in the beginning of Deltarune

  • Joshua Schneiter
    Joshua Schneiter 9 days ago

    why is gasters face in the beggining of the thery

  • CharaDreamurr XOX
    CharaDreamurr XOX 9 days ago

    It happened before because it was before the humans hated monsters and undyne lost her eye in the war between humans and monsters witch was after deltarune

  • YuanChen 10
    YuanChen 10 9 days ago

    Kris is Chara and person is frisk

  • Juan Gutierrez
    Juan Gutierrez 9 days ago

    So is this before the war I mean in genocide you also kill alphys patients or experiments that gone wrong until you kill them

  • Hankster Gangster
    Hankster Gangster 9 days ago

    Are you really surprised the undertale spin off sequel or whatever broke the fourth wall?

  • Josh Osborn
    Josh Osborn 10 days ago

    Kris = Chara. Chara made the new world to cleanse everything. Just something to think about :)

  • Milliyan White
    Milliyan White 10 days ago

    MatPat: How much time you got?
    Me: -stuffs self in theory wear- Let’s go.

  • Unknown
    Unknown 10 days ago

    5m intro huh

  • Rine Ray
    Rine Ray 10 days ago

    Something that just occurred to me: it seems simplistic to say that what Kris and Susie went through was ~only a game~ in a world where literal magic exists. Could it be that since Kris is a human (and thus isn't magical) they weren't able to access their magical playground without another monster to help (like Asriel)? So in a real sense it is only a game (I think that part of the analysis is apt), and all the characters are made up, but it could also be a physical thing that they actually experienced with the help of magic. Or it could be that Kris isn't fully human and has some scary powers that they've been keeping secret from everyone but Asriel and now Susie (they -are- able to rip out their own soul, after all. Not exactly normal human stuff).

  • Cathy Snyder
    Cathy Snyder 10 days ago +3

    Welcome the gtlive show do you have 90 minutes

  • Moto Moto
    Moto Moto 10 days ago

    There’s something you forgot about deltarune not being after undertale. In undertale, asriel states he is going to turn back into a flower, but instead he’s happily bleating in the field. Also, jevils possible contact with gaster. Because anyone gaster contacts is filled with a sudden insanity that made them question everything (e.x. Downer kid who questions about the existence of a world without you.) and sans doesn’t know you. Also also, how is chara here if there was never anyone to “awaken” her (aka going on a genocidal rampage and killing every monster) but she rips kris’ soul out.

  • BESTBOSS 666
    BESTBOSS 666 10 days ago

    4 Min intro wow

  • Supernova_ Gaming
    Supernova_ Gaming 10 days ago

    Undertale's Toriel wears the Deltarune symbol...

  • peanutt `, -
    peanutt `, - 10 days ago

    im always scared for life when watching your theories. cuz suddenly there would be creepy stuff

  • Eleanor Fudge
    Eleanor Fudge 11 days ago

    Someone has probably already pointed this out (or MatPat prolly mentions it in the next video and I just forgot) but is it just me, or is the guy in the car at 13:13 strikingly similar to one of Gaster's followers from Undertale? He's happy this time, rather than covering his face but his head shape and general leaning-type thing really stands out to me.

  • Sans Plays
    Sans Plays 11 days ago

    Notice... *Nobody else knows each other.... But toriel asgore and asriel do... Weird...*

  • LTboy YT
    LTboy YT 11 days ago

    you took way too long to start the intro

  • Monique Theimer
    Monique Theimer 11 days ago

    Yeah but... who's Lancer, then?

  • Zander Nelson-Lloyd
    Zander Nelson-Lloyd 11 days ago

    What if firsk gave their soul to flowey

  • Cole Radenberg
    Cole Radenberg 12 days ago

    Ok, so I didn't see this stated on the first video and I haven't seen it here... but what if undertale was just the first game Asriel played with kris when she was first adopted?? It seems to have a lot of potential parallels. From my limited knowledge of things. Asriel using the townsfolk as characters of the underground to help introduce Kris to them in a second hand way. Also easily parallels the new human in the monster town with a human child falling into the monster populated underground.

  • PotatoSpudツ
    PotatoSpudツ 12 days ago

    the red in the game theory logo stands for film theory :P

  • Lik koji postoji
    Lik koji postoji 12 days ago

    Viewers: Hey this is such a pleasant video

  • Filip Nwakor
    Filip Nwakor 13 days ago

    Asriel is a fusion

  • Deathboy17
    Deathboy17 13 days ago

    1:37 That's not quite accurate. I've learned that Murder Hobos are actually just PCs who enjoy killing everything in their path, even if they don't need to be killed. At least, that's what I've inferred from iilluminaughtii's DnD subreddit videos.

  • jojohx playz
    jojohx playz 14 days ago

    maybe it was the past but then the monsters where makeing havic and the war began and then thats where undertale started and then its your job to kill them or make it how it was before

  • Mikia Steed
    Mikia Steed 14 days ago

    Is Kris a boy or a girl? I can't tell

  • Daniel Koch
    Daniel Koch 14 days ago

    how much time 90minutes

  • Gacha Potato ;-;
    Gacha Potato ;-; 14 days ago

    Theory: Kris is trying to connect with us in the beginning. Think about it. We control Kris and they want to know if we are connected, not knowing that we would control them in the way they don't want. In the end, Kris decides, "No. That was a bad idea and you won't control me any longer." Kris is trying to connect and troll us before letting us take control until they decide not to let us continue.
    What do you guys think? :3

  • Gacha Potato ;-;
    Gacha Potato ;-; 14 days ago


  • TheBattlePikachu
    TheBattlePikachu 14 days ago

    "Then I'll get a theater degree, become a famous actor, and let the fangirls roll in little buddy."
    Burgerpants has seen the future...

  • Altruistic Protector
    Altruistic Protector 14 days ago

    3:24 Hey. Whats that blue thing sticking out of the Locker where Suzie is at

  • Bunny Socks
    Bunny Socks 14 days ago +1

    Somebody has probably said this before, but I've just come up with this (as far as I know). What if Gaster had the same save and load power that Frisk and Chara have? This could explain the breaking off of timelines with the human/monster war, should he, or another event he caused, have caused the war to never happen. This could also explain some of the experiments in UNDERTALE. What if Gaster wanted a way to see the other timelines, and his way of doing so was through DETERMINATION? This could also explain how he was 'trapped in his machine' because he was looking for a way to see other timelines and possibilities. All of this could have been for the UNDERGROUND as well because he could have thought that if the monsters couldn't get out easily, maybe going into another timeline would get them on the surface. (Again, someone may have said this before, I did not intend to copy anyone.

  • OverClips :D
    OverClips :D 14 days ago +1

    i get up to dance in the intro
    great intro

  • Roz animate
    Roz animate 14 days ago

    Duh asriel is a sheep also ralsei