The TRUE POWER of UNDERTALE Souls! | The SCIENCE!...of Undertale

  • Added:  10 days ago
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    UNDERTALE is one of the greatest games ever made, and the bosses are some of the best and most difficult. But what makes the Monsters so powerful? We know that Human souls are much stronger than the souls of Monsters, but that doesn't seem to slow them down. In this episode, Austin dives deep into the Underground to investigate the history and power of Souls, Monsters, and Humans in the world of Undertale!

    Game Theories:
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    More The SCIENCE!
    The Rhythms of DARK SOULS! ►►
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  • Video CategoriesGaming
  • Runtime: 14:45
  • Tags for this video:  undertale  undertale souls  gaster  w.d. gaster  sans  flowey  papyrus  undertale gaster  multiple worlds theory  Undertale ending  toby fox  solved  exposed  the science  science  undertale game theory  game theory  matpat game theory  game theorists  under tale  Undertale gameplay  genocide  pacifist  game theory undertale  

Comments: 11 074

  • Teacup4561
    Teacup4561 9 days ago +11352

    Everyone talking about the theory while just like
    Did you go through and edit an annoying dog into every frame???

  • according2websters
    according2websters 42 minutes ago

    When you talk about the monsters being murderous, here's the thing. The humans and monsters are already pretty racial stereotypical about the monsters. This is a crime both the humans and monsters probably committed this crime. If you saw a monster on the street, you would probably steer clear. Most of the monsters are trying to kill you for the greater good: hundreds freed. OF COURSE they'd want to kill you, not just for themselves but for there family, their friends. And besides, a lot of them don't actually want to kill you. Toriel, Mettaton, probably all of snowdins random encounters. A lot of them are forced to. And besides, with hundreds of these (7:12) and these (8:59) I think the monsters would have won.

  • according2websters
    according2websters 1 hour ago +1

    Did you use thinknoodles clip?

  • Sly the Hedgehog
    Sly the Hedgehog 1 hour ago

    Destiny 2 videos please?

  • Tin Cazar
    Tin Cazar 1 hour ago

    MATPAT! Do a five nights of freddy's: joy of creation theory! I have a small kick starter for it! So when you finish the first night you see that at the top of the news paper it says august 8th 201.... it does not say the last number but it does mean that it is more closer to 2017 than any other fnaf game but that is only the first night that means that that is a long time ago compared to when Scott's son get's his house back. I do not remember if Scott's son says it started 5 years ago, or something, when he is going to start telling you how it all happened. So yeah get to it Matpat!

  • Ashley 306
    Ashley 306 1 hour ago


  • Amara Rellasta
    Amara Rellasta 3 hours ago

    Invader Austin!
    You've done it again.

  • Emily Dague
    Emily Dague 3 hours ago


  • CmorDusMor Titanstrider

    You know how triggered the fanbase is gonna get at you right?

    UNWANTEDFRIEND 3 hours ago


  • xXTonyBlastXx
    xXTonyBlastXx 3 hours ago

    They played us like a damn fiddle.

  • The Vampire Gamer
    The Vampire Gamer 4 hours ago

    WAIT!!! What if the 6 main monster characters have absorbed human souls

  • Stephen Matier
    Stephen Matier 4 hours ago

    my son ordered one of your shirts from STUDIO &! US SHOP on June 18th. Despite 3 emails telling me it had shipped and sending me your inane video (3 Times!!!) telling me I'm gonna get a "free pin" shirt still hasn't arrived. This company are liars and cheats, in my opinion and your endorsement of them implicates you in this deceit. You should be ashamed of yourself ripping off kids in this way - disgraceful! DO NOT HAVE ANYTHING TO DO WITH THIS COMPANY STUDIO 21 US SHOP - OR ANY OF ITS SUPPORTERS INCLUDING GAME THEORISTS

  • Armchair Physicist
    Armchair Physicist 4 hours ago

    Oh please oh please celebrate the release of Metroid: Samus returns with a science video on life sucking metroids and how pants shitingly terrifying they are

  • Land Of Tom
    Land Of Tom 4 hours ago

    I think the next video should be How popularity ruined Game Theory

  • MinecraftKid67
    MinecraftKid67 6 hours ago

    Has anybody's T Shirts come in yet

  • Charlie Ben
    Charlie Ben 8 hours ago

    I finished undertale (my first playthrough anyway) a day before watching this.

  • Josette Arzadon
    Josette Arzadon 10 hours ago

    His voice sounds strange.

  • Josette Arzadon
    Josette Arzadon 10 hours ago

    his voice sounds strange.

  • Josette Arzadon
    Josette Arzadon 10 hours ago

    his voice sounds strange

  • Josette Arzadon
    Josette Arzadon 10 hours ago

    his voice sounds strange

  • neballar
    neballar 11 hours ago

    When its blue I'm on the click move

  • Seadra Limestone
    Seadra Limestone 12 hours ago


  • Wyatt Hodge
    Wyatt Hodge 13 hours ago

    He's gone insane

  • Cubing Syndrome
    Cubing Syndrome 13 hours ago

    0:00 song?

  • TOXIC Milk Productions.
    TOXIC Milk Productions. 13 hours ago +1

    Great dog, great meme, much annoying.

  • TOXIC Milk Productions.
    TOXIC Milk Productions. 13 hours ago +1

    A horror, huh? Well, I guess you could look at it that way.

  • Jaime Aguilar
    Jaime Aguilar 13 hours ago

    Hopefully he does a video on ratchet and clank

  • JamesandBond Gaming
    JamesandBond Gaming 13 hours ago

    I saw Gaster's ATK and DEF! It was 6666 and 6666. Maybe a Gaster Fight was supposed to happen?

  • CrystalusAurora
    CrystalusAurora 14 hours ago

    Dear Austin and MatPat,

    If Youtube actually were demonetizing videos for swearing, people like Markiplier and Jacksepticeye wouldn't be making ANY MONEY AT ALL. Stop worrying about such things and #LETAUSTINCURSE !


  • AudomarIsBest
    AudomarIsBest 15 hours ago

    Listening to EVERY SINGLE undertale ost remix, is actually incredibly sad.

  • OnUTube
    OnUTube 15 hours ago

    Lmfao x 9999

  • Mythical123
    Mythical123 15 hours ago

    You should talk about how Echo Flowers work. A couple of friends and I have been putting together a theory about how these flowers exist in abundance in a place without sunlight, echoing everything that they hear. I'd enjoy hearing your thoughts on them.
    And, also, this is one of the many reasons why Flowey is my favorite character(s?).

  • Derek Hogan
    Derek Hogan 15 hours ago

    Tem is the true god.

  • DevestationReb
    DevestationReb 17 hours ago

    Holy cow... What if the the six monster characters were the one to absorb the six human souls? Like so he can see!

  • Adventure Craft Gaming
    Adventure Craft Gaming 17 hours ago

    Theres one simple thing you missed. Asriel took charas soul to make it through the barriar. He died with charas soul, but asriel turned into flowey. Flowey had charas soul when he turned into asriel again. That meens he had another soul to use to be that powerful

  • Emory_IS_ Funny
    Emory_IS_ Funny 18 hours ago


  • TheBrandonGame
    TheBrandonGame 19 hours ago

    5k dislikes. People who hate undertale. Or idiot fans still angry about the ness= sans theory

  • Darin Gainey
    Darin Gainey 19 hours ago

    Pause at 0:05.
    This guy again?
    *Dislike & leave*

  • DivineDemise
    DivineDemise 20 hours ago

    Souls = Chaos emeralds confirmed.

  • RedHeadSkittle
    RedHeadSkittle 20 hours ago

    had anyone else not gotten their theory wear stuff yet? Is it only me....?

  • bryce spenst
    bryce spenst 21 hour ago

    Love mars by the planets

  • Sarah Moore
    Sarah Moore 21 hour ago +1

    I haven't watched this channel in ages!I'm back,nice to see your funny,amazing videos again matpat!

    • Fanfiction Reader
      Fanfiction Reader 13 hours ago

      Sarah Moore i hope this is sarcasm. because this is austin. not matpat

  • pewterpooter
    pewterpooter 21 hour ago

    Soul worth? 1 soul = 1 20 piece McNugget

  • Brinley 04
    Brinley 04 22 hours ago

    1:28 jeez

  • Tia Via
    Tia Via 22 hours ago

    Hey, Austin. I've always been a big fan of yours, but I was wondering if you could do a theory about the RiverPerson in Undertale. Just a suggestion, I hope I didn't sound rude.

  • Rainbow Mike
    Rainbow Mike 23 hours ago

    THE SCIENCE! series is the highlight of my life

  • ProGlitchy5
    ProGlitchy5 23 hours ago

    Isn't that voice of youtuber of ThinkNoodles?

  • Taming T
    Taming T 1 day ago

    In minecraft

  • Taming T
    Taming T 1 day ago

    Can you do a theory on disc 11 or 13

  • MagicTurtle Gaming
    MagicTurtle Gaming 1 day ago +1

    Where is the next fnaf theory? The twisted ones is out😂

  • Bamm Bamm17
    Bamm Bamm17 1 day ago

    Did u ever talk about who killed phone guy in the first game

  • Asriel Dreemurr
    Asriel Dreemurr 1 day ago

    did you use Yub's undertale gameplay..?

  • Kuchen Krümel
    Kuchen Krümel 1 day ago

    What's the name of the song in the background at the beginning?

  • DDub04
    DDub04 1 day ago


  • Bloggers Life
    Bloggers Life 1 day ago

    #bring back matpat

  • Kimberly O'Brien
    Kimberly O'Brien 1 day ago

    Well I am chilled. but that could be the rain

  • Jacob Rouse
    Jacob Rouse 1 day ago

    Bruh you edited a dog in every frame? GET SOME SLEEP

  • Pixel Breaker
    Pixel Breaker 1 day ago +1

    Too deep.

  • ToyBonnieSFM
    ToyBonnieSFM 1 day ago

    Where's the theory about the twisted ones?

  • KittyFox 106
    KittyFox 106 1 day ago

    Monsters are freakin... Danngerous

  • BookDraco
    BookDraco 1 day ago

    Hey Austin, could you try to calculate how the strength of a soul with the determination trait compares to other souls? This was a really cool video!

  • Lil' Gamer
    Lil' Gamer 1 day ago

    I LOVE!!! LOVE!!! UNDERTALE THEORIES!!!! MORE PLZZZZ!!!!!!! Maybe somethings about the amalgamates or how there could be other ways to get out. (I thought of some. waterfall hole where you came from)

  • FreddyCraftbear The Gamer

    I think you should do a theory on Sans' powers. Like if someone had that power, if it is very dangerous or harmless. Something like that

  • Titan-Volt 101
    Titan-Volt 101 1 day ago

    Hey, this actually a great "theory"! Good job Austin on using maths to uncover even the deepest secrets of Undertale!

  • Bionically Challenged


  • Josef Noel
    Josef Noel 1 day ago

    I want mat pat back

  • The1Tru Morty
    The1Tru Morty 1 day ago

    Rocket league would be dope

    MEGIC TRICK 1 day ago

    Im gay, heyyy but that is just a theory

  • randomperson8571
    randomperson8571 1 day ago

    I really wanted to watch the video for its content but I ended up mostly playing "Find the white dog in every screen"

  • Gamebrain Thinks
    Gamebrain Thinks 1 day ago +4


  • Hamza Alhadidi
    Hamza Alhadidi 1 day ago +1


  • OneTimeToo
    OneTimeToo 1 day ago

    I love Mars, holts it's one of my favorite songs nice use👍👍👍

  • Aj McCarthy
    Aj McCarthy 1 day ago +2

    Do one how gravity works on halo.

  • Reckless_ Mike
    Reckless_ Mike 1 day ago

    Make a Vid of how rich is Mr.Crabs

  • Invisible Man
    Invisible Man 1 day ago

    does anyone know what the background song is?

  • Ayden Jones
    Ayden Jones 1 day ago

    Umm .... voice please

  • GmanTEM Mine
    GmanTEM Mine 1 day ago

    Think of it this way Austin there is always a possibility that not all monsters agree on not fighting?

  • Quinn1st
    Quinn1st 1 day ago

    So this may either shatter the last half of the video or make me sound like an idiot but what about the souls in the boxes??

  • Yugrasdru
    Yugrasdru 1 day ago

    Austin... Get some sleep.

  • Samarra Gottscheu
    Samarra Gottscheu 1 day ago

    Austin, I'm sure we can all appreciate your DETERMINATION to do this episode. But geez, have some MERCY on yourself. (Ba dun tiss)

  • First2comment
    First2comment 1 day ago


  • Random Furry stuff
    Random Furry stuff 1 day ago

    I'm having cake and hot cocoa for breakfast you jealous?

  • Chuunibyou Fan
    Chuunibyou Fan 1 day ago

    Hey Austin, I'm a huge fan of your videos! I've watched all your videos from start to finish. Anyway I remember you doing SCIENCE! For Fallout 4. I wanted to know "How does the Gauss Rifle work?"

  • AAIIGI92
    AAIIGI92 1 day ago

    I am terribly sorry that the over-zealous fans of Undertale gives you guys so much trouble. Those kind of fans is what gives descent fans like me a bad name and treated the same as the bad kind of fans. I think the game theories of Undertale is actually really good and plausible in most areas... Except for the first Undertale theory, I just don't get it really but at least I didn't take the theory too seriously like everyone else did. Keep up the good work and maybe someday Toby Fox will see these and he'll clap his hands and say, "Congratulations, you've managed to reveal my secret in the lore of Undertale!" =)

  • Jack McCarron
    Jack McCarron 1 day ago

    I would love to see a theory on the Tornado 6 (can bullets ricochet off walls?) and a theory on Mario's fire ball's (mostly how they work underwater.)

  • Dakuu75
    Dakuu75 1 day ago

    Lol, I'm just laughing so hard, on the inside... on the idea of all the butt-hurt, salty, children posting horrible, threatening, comments over having Austin call the monsters of Undertale "THE REAL bad guys, all along" You know there's gonna be that group of uber-obssed undertale fans just posting comment after comment, and reply after salty-butt-hurt-reply... feels good, lol.

    Anyway, cool video, very enjoyable, cheers~ <3

  • Riley Random Videos
    Riley Random Videos 1 day ago +1

    do a theory for terraria

  • Crystal Nguyen
    Crystal Nguyen 1 day ago

    Why does Toby Fox just want to confuse everyone on this entire planet????

  • Meme Master
    Meme Master 2 days ago

    where's mat pat? haven't watched in a while

  • Azle Diaz
    Azle Diaz 2 days ago

    Isn't papyrus a good guy at least

  • Takya Compton
    Takya Compton 2 days ago

    So ummmmm the dog wut was up with that

  • ian garcia-mcintyre
    ian garcia-mcintyre 2 days ago

    Hey Austin, i have a question about dark souls the entire series, what is estus, and what does it do

  • Stompy
    Stompy 2 days ago

    Finally... He's going Nuts :D

    OGGY KING 2 days ago

    Flowey absorbed 6 human souls he absorbed all monsters soul(or 1 human soul) so that means he absorbed 7 human souls.You need just 7 human souls to become a god(or in this case the god of hyperdeath)not 13.687.So there is no way that there is extra 6.687 souls.And if they did hunt humans on the surface wouldn't they used that power in the war to destroy not just the whole village but the whole human species.All of this can support my theory that i written down in the comments.Monsters were pacifist all of the time.

  • Emsterme 101
    Emsterme 101 2 days ago

    But, what if the other 6 souls gained stuff before they died, and they all have different levels of strength and health

  • Zoe Glass
    Zoe Glass 2 days ago +3

    Finally, someone gets that THERE WILL BE A WAR OF HUMANS AND MONSTERS WHEN THE MONSTERS GO FREE! There's one sequel where that actually happens: mine, and it isn't even finished.

    OGGY KING 2 days ago

    Oh and Undyne can have determination.Every monster can be determined if they try.That or the ice cream theory.

  • Josue Mendez
    Josue Mendez 2 days ago

    lol matpat if you're this low how about just off yourself and do a homestuck theory

  • UB01 - Symbiont
    UB01 - Symbiont 2 days ago


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