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Was MatPat right about Sans? For years, he was mocked by the community for his infamous Sans's Nest theory. However, with the release of Deltarune Chapter 5, Sans is once again back in the spotlight and it seems to imply that Matt may have been onto something all those years ago. Hello internet. Welcome to Game Theory, the show that has a lot more to say about Deltarune Chapter 5. If you missed our last video, we mostly covered the main route of the game, talking about Chris's father Asgore, his involvement in the old Dark World, how the Dark World is what turned Dess into the night, and how that's forecasting the potential fate of Susie as she too is beginning to spend a little too much time in the Dark World. However,
during that last video, I said this. Now, I don't have time to do a deep dive into the weird route or the connections it has with Sans and Gaster right now. Well, now I do have time for it and it turns out we may have been more right about Sans than anyone ever suspected. Deltarune just didn't exist to give us the full answer. And it's all because of the alternate route that you can take in Deltarune, which has been dubbed the Snowgrave or weird route. This route started all the way back in Chapter 2 where Chris can take their childhood friend Noelle through the city and start pushing them to become more violent towards the
monsters. In each subsequent chapter, we've been given the choice to continue this path, continuing to manipulate Noelle and force her to become stronger, leading to a little red dot appearing on the screen that says, "Thank you." We previously theorized that this is Noelle's soul growing similar to the soul Chris holds within their chest. It's her heart and her will to make decisions that has grown. We believe the goal of this was to make Noelle the second hero of the prophecy instead of Susie as we see the image of a girl in a robe with a heart that says, "Love finds its way to the girl." Love being levels of violence, a measure used in Undertale. But, as I've alluded to, the connections to Undertale
don't stop there. Because even though chapter five's weird route is super short, Chris and Noelle's actions, as well as Sans' appearance, confirm so much about the foundation of Deltarune, its future chapters, and how Sans ties everything together. All will be revealed as we follow the trail of breadcrumbs that's being left for us loyal theorists. I just hope you don't mind getting a little wet. If you've taken the weird route thus far, at the start of the chapter, instead of Chris waking up early to go to the festival, Chris sleeps in. Having missed the whole festival, Susie takes Chris to meet Noelle. Because Noelle wanted to speak with them. Noelle is acting very different here. She talks about how she
has changed. Since Dess disappeared, she just kind of carried on. Chris has shown her a new way. The free will that we, the player, have been forcing upon her. Noelle grabs Chris by the hand and says to go somewhere no one has ever been before. As you near the edge of the lake, you continue to say, "Proceed." Noelle and Chris walk deeper and deeper. You continue to select proceed. And as it looks like the screen is whiting out, Chris and Noelle slowly drown. Suddenly, screen goes black and text appears that says, "Insert chapter
seven, side B." And that's it. That's the end of chapter five. We skipped over the entirety of the chapter and even chapter six. You don't even get to go to the Dark World and hang out with my boy Flowey. But despite the weird route being so short, the limited interactions you do have reveal a lot. In this route, the festival has already ended, but there is one character still standing around waiting for you. Sans. In both routes, when you find him, Sans asks Susie to draw her friends on a punch card. In the normal route, she doesn't specify who she draws, but based on the fact that Noelle is standing right there, it would make sense for Susie to be drawing Noelle in this image alongside herself, Chris, and Ralsei.
However, in the weird route, she specifically calls out that it's just her, Chris, and Ralsei. This is where we get to the part I spoke about in the last episode. Because long-time Undertale fans know if you go to the secret lab in Undertale, you will find a poorly drawn picture of three smiling people, and underneath is written the words "Don't forget." Sans' drawing in Undertale specifically calls out three smiling people. So, this is implying that the drawn picture from Susie is the same one from Undertale, and that it's specifically the one from the weird route. It's also worth mentioning that this interaction with Sans in the weird route is mandatory, but the one in the normal route is actually just optional.
Sans is well known as a bit of a multiversal being given his interactions in Undertale, but Sans holding onto this note from the weird route means that this is the canon route of Deltarune, not just a fun alternative, but the way it's supposed to go. Noel choosing violence is how Deltarune ends. But then, Sans does something else that's even more interesting. Just before we head to the lake to meet Noel, he says he's run out of ice cream and instead gives us bread. Just bread. This does not feel like equivalent exchange, my friend. Although, we are getting it for free, so maybe I shouldn't question it.
Regardless, it feels like a super strange gift until you read the description. A loaf of bread tends to leave crumbs wherever it goes. Sans giving us this bread is purposefully designed to have us leave a breadcrumb trail. Now, immediately my theorist alarm bells were going off because this is actually an item in Earthbound. You use bread to make breadcrumbs that can teleport the player to the location where the breadcrumbs began. Or if that area no longer exists, it sends you out of bounds. Sans is Ness confirmed in the big 2026, everybody. Of course, I'm kidding. Well, kind of. Sans isn't really connected to Ness or Earthbound, but it does finally give us an explanation for Sans and where he actually came from. During your dinner
date with Sans in Undertale, he says that Frisk must really want to go home, and that he knows the feeling, buddo. And during the genocide route, he tells us, "Look, I gave up trying to go back a long time ago, and getting to the surface doesn't really appeal anymore, either." The use of either here is communicating that going back is one option, and returning to the surface is another. Meanwhile, the Snowdin shopkeeper talks about how Sans and Papyrus showed up one day and asserted themselves. Combine this with the fact that Sans can bleed, something which characters in Undertale cannot do, and it becomes very clear that Sans isn't originally from Undertale, but somewhere else.
Maybe someone I can sleep new fit. Wait, what? Who are you? We all know Sans loves himself a hoodie. The blue zip-up is iconic, but variety is the spice of life, so he could always try a pullover like the new one we're selling over at The Wear Dot Store. Right now, featuring another one of our favorite blue guys. Huggy Wuggy. That's right. We're doing another Poppy collection, and let me tell you, this one is super fun. As summer approaches, we wanted to do a summertime baseball theme, like Playtime Co. is just taking their guys out to the ballgame. Are you team Huggy? Then get our Huggy hoodie, that of course features our classic heavyweight material, but you can also get these cool iron-on patches
to go with it, including fan-favorite secret character Lemon. Look at those cold, dead eyes just teasing us with a lore that we can't figure out. Or, there's the less crazy-inducing option, because she has enough crazy for all of us. Our Lily Love Braid's varsity tee. And you can capture it all thanks to our Gus the camera guy. Glooby, in a brand new reusable film camera form factor, complete with Playtime Co. exclusive film. Just brings me back to my summer days of playing as a kid. I like the sports. But, hey, at least I can now look good while doing it.
All of these are available while stocks last, so head on down to the description and click the link, or use the QR code on screen to get yours today. Thank you, Spamton. Sadly, it doesn't look like Sans is super interested in this hoodie, so I guess you'll have to go away, and we should just focus on the fact that Sans isn't actually from Undertale. Instead, it appears he's from Deltarune, and he used the breadcrumbs to escape. Monsters in the underground of Undertale don't bleed. Sans is the only one. But, you know where monsters do bleed? Deltarune. When you're on the dinner date with Sans in Undertale, the
song that plays is called It's Raining Somewhere Else. However, at the end of Deltarune chapter 4, the song that plays is called The Place Where It Rained. Sans' special song ties directly to the Deltarune location. And we all know how much care and attention Toby Fox puts into the music of these games. And for more evidence, look no further than the exclusive interaction you can have with Sans in Undertale's dog casino. By making it look like it snows, Sans says, putting down presents for everyone. Papyrus, the yellow kid, the antlered girl, and her big sis. The yellow kid is Kris with the yellow skin. The antlered
girl is Noelle, and her big sis is Dess. Sans has memories of his time and the people in Deltarune. And tragically, he can't go back. And the only way to try is by creating determination. Right after the moment we're given the bread by Sans, we head to meet Noelle, which leads to the whole glitching through the Matrix thing and skipping to chapter 7. But, what is actually happening here? It's hard to say for sure. Noelle just says, "Let's go somewhere no one has gone before." But, I do think it's interesting that we have Kris, a human containing our soul, and Noelle, a monster, who is also gaining a soul of
some kind. Now, think back to Undertale. There, monsters were sealed in the underground, only able to break the barrier and transcend to the surface if they used the souls of a human and a monster. That is what we're seeing happen now in Deltarune. Both Kris and now Noelle have souls, and so their determination is helping them to transcend to an upper plane, maybe the one we've talked about before, the angels' heaven. We're still not 100% sure what that is. All we theorized is that we are in some way the angels, the ones controlling these souls. And so, wherever we are is where the control is coming from. It's widely theorized that Deltarune is part of the experiments that we saw WD Gaster performing before
the events of Undertale. Gaster, for those of you who don't know, was the royal scientist within the Undertale universe before the events of the game. He does have a chance to appear in the game depending on certain in-game values that you are assigned, but by the time the game happens, he has mostly disappeared, appearing to have shattered across time and space. But before that, he was running experiments on determination, the key driving force behind our character in Undertale and the monsters' only way to break the barrier, leading to the creation of the GONER characters, monsters that have been corrupted by determination. In the
secret lab, you can find notes about his experiments, but there's one that's missing, entry 17. If you hack the game, you can access this journal entry, which is written in Wing Dings, hence WD Gaster. But when translated, it says this, "Darker, darker, yet darker. The darkness keeps growing. The shadows cutting deeper. Photon readings negative. This next experiment seems very, very interesting. What do you two think?" The noise you hear during the sequence can actually be heard if you use your phone in the dark world in Deltarune. And in the intro sequence for Deltarune, a character speaks to us and their speech pattern seems very similar to Gaster's. But alongside that, the file is called GONER maker. Gaster made the GONERs. And
Gaster's theme plays during this sequence, implying that this is in fact Gaster who is speaking to us at the start of an experiment. These references to dark, darker, yet darker, the shadows cutting like how Chris opens the dark fountains with a knife, and the references to this particular determination experiment being interesting has led the community to believe that this experiment from entry 17 is the Deltarune that we have been playing. Gaster and Undertale are the higher plane of existence above where these experiments take place, the world of Deltarune. And so, if Noelle and Chris are transcending thanks to them having the souls of a human and a monster, there's a good chance they end up in Undertale in chapter 7, leaving
behind a breadcrumb trail for Sans to follow, taking him to the world of Undertale before the events of that game. Or at least, that's where I was going to leave this episode. I figured it was a pretty solid endpoint before the next chapter. Kris and Noelle are heading to Undertale and Sans was originally from Delta Rune. The Weird Route is showing us that Matt was actually on the right track with his original Sans's Nest theory. Delta Rune just didn't exist at the time, so he did the only logical thing and connected it to the other franchise that Toby Fox took a lot of inspiration from. But, the more I looked into Sans, the more I realized that, yes, he's from somewhere
that isn't Undertale, we all agree on that, but it's not Delta Rune, either. You see, when you first meet Sans in Delta Rune, he says that he's new in town. Now, we know that Sans is a very good liar. In Undertale, he consistently uses jokes and casualness as a front for him knowing more than he lets on. So, him claiming to be new in town could very well just be him lying. But, Susie actually confirms this part of his story, saying that the house itself is also new and not being able to remember what came before. And when you look at the house, something else stands out about it. It's identical to his house in Undertale. While we've seen plenty of characters repeat from Undertale to Delta Rune, they've always
had distinct differences, like their personality, visual differences, and things like their houses. But, Sans isn't different or even similar. It's the exact same house. Almost like, much like we're told in Undertale, he just showed up one day and asserted himself into the world, transporting the house along with him. Because even the house is considered to be new, just like Sans. In that first conversation with Sans about him being new, he also does another one of his classic Sans-isms, where he says, "Considering we've never met before." and then winks. This is a classic sign that Sans is lying, knowing more than what he's saying. In chapter 4, he also actively stops Toriel
from going to look for Chris and Susie, telling her that they're just fine. And in chapter 5, when he refused to give you ice cream, if you look really carefully, there is an ice cream there. A suspiciously Gaster Blaster shaped ice cream. He does know us, not because he's from here, but because he's been part of Gaster's team since before the existence of Deltarune. We theorized before that Sans is actually a scientist working for Gaster. His signature weapon is a Gaster Blaster, so duh. But, Sans also has an interest in science. He has a history with the current royal scientist Alphys. A bunch of entries in the secret lab are also written in
entirely lower case, which is how Sans speaks in the game. When Gaster says, "What do you two think?" in entry 17, he's referring to Alphys and Sans. So, I'm proposing that the reason Sans knows so much about Deltarune in Undertale, and why he's present in this game, is not because he's a local, but because he used his space manipulation powers to transplant himself and his home inside the experiment. In Sans' home in Undertale, we see a broken machine, and Toby Fox seemed to imply that they could never fix it. I believe that this machine is likely what Sans used to transport himself and his home between the world of Undertale and Deltarune, only for it to break after the final events of Deltarune upon his final
return. Deltarune is Gaster's experiment to see if determination can be formed, if they can choose their own destiny. If he's going to succeed, he needs to make sure that Chris, or more importantly, we stay on track. Sans gives Chris the bread to form a trail of crumbs so that they can track what's about to happen within the experiment. Right after that, the human and the monsters' souls transcend. A true showing of determination, and that is what Gaster has been after. This is the turning point for the experiment, and if it works like in Earthbound, these breadcrumbs will allow Sans and Gaster to keep returning to this moment again and again to repeat the experiment as much as they need to. It's no secret
that Sans hates humans. He says so a few times, going as far as to say to Frisk that if he hadn't promised Toriel to protect humans, you'd be dead where you stand. Of course, the hatred of humans is expected in the world of Undertale. The humans banished them to the underground. There's going to be some emotions that go with that. But, in Deltarune, Sans is nice to Chris, a human. He even tells us to take it easy. So, something between then and now changes his outlook on humans, and it's the weird route. The weird route is full of violence, much like the genocide route where he revealed his hatred for us. Sans is seeing firsthand the destruction we are causing through Chris. All the monsters we destroy with no care, and
that is going to lead to Sans's hatred of humans. More specifically, humans with soul and determination. Because, given the choice, they will always choose violence. Fun fact, in the Undertale soundtrack, there's a song called The Song That Might Play When You Fight Sans. It never shows up. There is zero chance of it showing up when you play the game or when you fight Sans. But, if It's Raining Somewhere Else was foreshadowing Deltarune, maybe this song is doing the same thing. Maybe in chapter 7 side B, we are going to end up fighting Sans, who, despite being there to keep things on track, doesn't want to see us all go down this road. He doesn't like seeing where determination leads, and if it's successful, Gaster would put
the whole of Undertale on the same path. During the fight, his machine will likely be damaged, only offering him one more trip to Undertale before it's broken for good. That is why Sans writes don't forget on the punch card, so he can always remember the route that Chris took and what they did, how they revealed the true nature of determination. Sadly, that means we're still none the wiser as to where Sans was originally from. My bad. I know that's what I sold this whole episode on, but I do think what we found today is really interesting. And wherever he is from, he doesn't see any way of going back. And whatever happened there, it led him to just appear in Undertale one day. Maybe wherever it was also destroyed by that same
determination. And now he's begun studying, working with people like Gaster to make sure it doesn't destroy anything else ever again. That or maybe Mat was right and he is just Ness. But hey, that's just a theory. A game theory. Thanks for watching. World premiere on Game Theory. Deltarune chapter 5 has more lore than people realize.
