Togore Dreemurr

Togore Dreemurr is a minor fanmade character in Toby Fox's 2015 indie RPG Undertale and its 2018 episodic parallel story, Deltarune.

He is the middle child of the royal Dreemurr family, and the sole survivor between the three siblings during the events of Undertale. Long after the premature deaths of his two siblings, Togore tends to himself in MTT Resort, not bothering to really make himself known. He's just content chilling in the corner of the hotel.

The original video that popularized Togore was created by SunnyGX4, while the sprite most commonly associated with him was created by Chapsti99794854/Chapstick.

His Neutral Ranking Why Isn't He Good Nor Evil? Togore as a generalized concept does not do any notable actions, and he's explicitly stated to have little plot relevance. Combined with a lack of a consistent personality, Togore's generalized perception has too little to properly place him in either the Heroes or Villains Fanon Wiki. Even though many interpretations of Togore are positive, most of his good deeds amount to generic kindness, which isn't enough to land a spot on the Heroes Fanon Wiki.

Appearance Togore is a young goat-like monster with white fur and giant, buggy eyes. He wears a yellow shirt with a faint lime-green stripe and black shorts. Togore's ears are, while flappy, rather small compared to his elongated head, only reaching to his eyes. While Togore's sprite is rather stout, some depictions have him be tall and lanky instead. Despite his appearance, it's likely that Togore is an adult due to living for nearly the entirety of the Underground's time as a kingdom.

Togore's appearance is taken from Checho's Deltarune RP.

Personality Due to Togore's origin not containing any dialogue and only mentioning him as "chilling", his personality tends to vary from interpretation to interpretation. However, he is commonly seen as a polite, albeit unsettling and introverted individual who loves learning about things like bugs. His big eyes have often caused him to be characterized as someone who stares at things often. While somewhat uncommon, some fans interpret Togore as being autistic, with bugs as his special interest. Despite his differing way of living life, he is near-consistently shown loving his family, as well as those he considers his friends, and tends to be shown as missing the ones who he lost throughout his life.

Overall, his fandom portrayal tends to be a lot more mellow than his lesser-known original counterpart, who was actually extremely violent, might've erased someone else from existence, and might've killed Toby Fox over a bizarre conspiracy.

Biography Undertale Togore is the middle child of the Dreemurr family, born after Asriel Dreemurr, but before Chara fell into the Underground and was adopted by them. Most fanworks agree that the Dreemurr siblings had a generally positive relationship, though some fanart does depict Chara and Togore as rivals due to the 10 anniversary stream.

Tragedy struck when Chara poisoned themself in an attempt to free monsterkind, wanting Asriel to absorb their soul and travel to the surface. Unfortunately, due to Asriel's nature, he refused to fight any humans, being mortally wounded by Chara's hometown before dying back home, his dust spreading on the royal gardens. While Asgore would wage war against humanity while Toriel would retreat to the Ruins, Togore's reaction has mostly been unexplored.

Despite the lengthy period of time between Chara's death and Frisk falling into the Underground, Togore had somehow managed to stay alive, being found within MTT resort. His dialogue is unknown, and considering his placement as a non-canonical character, some suggest that Togore might be related to W. D. Gaster in some way. While the Holidays are stated to exist in this world, it's unclear if Togore is friends with them. Some people have Togore encountered in other places in Hotland as well.

Togore's ultimate fate depends on the actions of Frisk. Should they perform the True Pacifist route, Togore's SOUL gets absorbed by what remains of his brother before eventually being revived, finally able to leave the underground. Should Frisk commit atrocities in the game's Genocide route, Togore is erased alongside the rest of the world by their sibling's reawoken hand. If Frisk is on a Neutral route, Togore will end up trapped in the Underground with whatever is left of monsterkind, seemingly not taking up the throne.

Deltarune Togore's counterpart in Deltarune has little agreed basis due to it lacking an origin video like his Undertale counterpart. However, there are a few commonly accepted ideas as to how he would work in this parallel story.

One notable interpretation is that Togore lived a relatively normal life compared to his Undertale counterpart. He is often seen as a supportive older brother to Kris. His dynamic with Asriel is mostly unexplored, but presumably positive. Togore is often shown as a friend to the Holiday family, often having a close bond with fellow fan character Chester Holiday, a joke character made by DarkWorldRaltzy serving as the identity of the Roaring Knight. A few interpretations, such as the one found in miggsbison's Togore Time, are also shown wanting to find information regarding the disappearance of Dess Holiday, the eldest child of the Holiday home.

Another, though less popular interpretation, is that Togore is actually an aborted fetus that Toriel and Asgore did not want, brought to life in a Dark World. Some report that he ends up being the true identity of Ralsei, one of the three heroes of prophecy. The logistics of an aborted fetus making its way into a Dark World held within the school's supply closet is unclear.

Trivia Despite Togore as a character being mostly formed in 2025, Togore's name was conceived as far back as 2015 as a joke on what Asriel could've been named. Like his brother, "Togore" is a portmanteau of "Toriel" and "Asgore". It's a semi-recurring joke that Kris was originally meant to be named Togore, but was stopped by the Holidays, who gave them a more traditionally acceptable name based on Kris Kringle instead. Alternatively, it's joked that "Togore" is Kris' deadname, and they changed it not because they're non-binary, but because they feel that "Togore" isn't a good name. Togore's very existence presents a logical loophole in the story of Undertale. Boss Monsters, such as Toriel and Asgore, only age when their biological children are alive, and stop aging if their children were ever to die. Because Togore is still alive, and is presumably the Dreemurrs' biological son, Toriel and Asgore would have either died out or would be far older than they are in canon. Togore's design is taken from Checho's Undertale Roleplay, a Roblox social roleplaying game developed by chechoboy12. According to Chapstick, the person who made Togore's current sprite, the team couldn't get ahold of the original designer for Togore, with Chapstick's design being used as a replacement for the game's successor, Checho's Deltarune RP. Allegedly, if Togore was ever mentioned to Toby Fox, the latter would freak out for some inexplicable reason. While Toby would end up saying Togore's name during the 10th anniversary charity event, it's simply an alias for Chara and not the actual character, meaning that whether the myth is true or not is up in the air. Alongside "Chara", "Togore" was chosen as one of the two possible names during the UNDERTALE 10th Anniversary Streams in a voting poll. Togore was the second most voted name at 1507 votes, or around 25.81% of voters. He was the most popular eligible vote, due to the first place spot, Gaster, crashing the game upon being selected. During the stream itself, the two names were pitted against each other to raise funds for Doctors Without Borders, with whichever name having the most money donated under them being the one selected in-game. For most of the stream, Togore was the chosen name for most of the run, swapping out with Chara for a few instances. Ultimately, Chara would end up being the final name, being switched out near the end of the True Lab.

Togore Time is a series of Deltarune fancomics created by Tumblr user miggsboson, focusing on the eponymous Togore Dreemurr, the unseen middle child of the Dreemurr family, with his appearance based off a memetic sprite by Twitter user Chapstick.

Unlike the comedic circumstances the sprite was made for, Togore Time is a quiet examination of Togore during the Summer before the events of Deltarune, as well as other miscellaneous moments leading up to it.

An archive of all comics can be found on miggsboson's website.

Actually Pretty Funny: When Dess proclaims that she's not her mom's "peon" in "Here", Chester cracks a joke about it sounding like she said "pee on mom". Dess is shown visibly holding back laughter, and Rudy's following joke about pissing contests has Carol smiling. Adaptational Heroism: Of a sorts. When he was originally conceptualized, Chester Holiday was very obviously the Roaring Knight, a Humanoid Abomination who aimed to usher in The End of the World as We Know It. Here he's a genuine Lovable Jock, and his absence is due to him being abroad in Japan. Age Lift: Thanks to having another younger sibling, both Dess and Asriel are described as being slightly older than they are in canon. Brains and Brawn: Taking canon implications into account that Asriel is somewhat of a jock makes him and Togore this, with Togore shown to be very computer savvy. Canon Foreigner: Togore and Chester, naturally. Catchphrase: Togore-tastic! Not So Above It All: In "Here", resident ice queen Carol Holiday still laughs at both her son and husband's low brow Toilet Humor. We Used to Be Friends: Togore and Kris are implied to not be as close as they used to be, though Togore still hangs out with Noelle regularly.

Togore Dreemurr is a fandom-created fanon meme character rather than an official part of the Undertale or Deltarune canon. Because he exists entirely in community art, jokes, and fan projects, his personality varies, but fan interpretations commonly depict him as:Fanon Personality TraitsCalm and Mellow: Often portrayed as a quiet, easygoing, and "chilling" individual who stays out of major conflicts.Introverted and Awkward: Frequently characterized as a wide-eyed, slightly unsettling, or socially awkward homebody who keeps to himself or stays in his room.Bug Enthusiast: Widely associated in fan headcanons with a love for facts about insects or specialized niche interests.Family-Oriented: Shown as deeply caring for his fictional family members (as the imagined middle child between Asriel and Kris/Chara).

Togore Time is a Deltarune fancomic series by Miggs Perez (Tumblr/X: miggsboson / Ol_Bungus). It centers on Togore Dreemurr, a non-canon middle child of the Dreemurr family (between Asriel and Kris), whose design is based on a popular meme sprite originally created by Twitter/X user Chapstick. Core Setup: The Middle Child AU The series takes place in an alternate universe where three families each have an extra (middle) child:

Dreemurrs: Togore Dreemurr Holidays: Chester Holiday Cattenheimers: Catteigh Cattenheimer

This makes Asriel, Dess, and Catty slightly older than they appear in canon. The “present day” of the comics is summer 2018 (the summer before the events of Deltarune). Flashbacks mostly cover 2009 and 2013–14. Kris and Susie are not yet friends, and none of the main characters have begun their canon arcs. The comics focus almost entirely on Light World slice-of-life stories, family dynamics, quiet character moments, and local Hometown life rather than Dark Worlds. The creator has said Dark World versions of Togore or major Darkner interactions are unlikely for now. Character Focus & Tone Unlike the original meme’s comedic intent, Togore Time is a quieter, more melancholic and introspective examination of Togore’s life. He is portrayed as computer-savvy, interested in cryptids/parasites/weird internet topics, somewhat socially awkward or autistic-coded in fan discussions of the work, and closer to Noelle than to Kris (their childhood closeness has faded). His catchphrase is “Togore-tastic!” Chester Holiday is reimagined as a genuine lovable jock (rather than any darker interpretations that exist elsewhere in the fandom) who is currently abroad in Japan. The comics also explore the Holiday family, the shrinking Hometown Cryptid Club (mainly Togore and Noelle), lingering effects of Dess’s disappearance, and everyday family tensions after Toriel and Asgore’s divorce. Comic Structure The series consists of short-to-medium vignette-style comics (some multi-page). An archive is maintained on the creator’s Neocities site (miggsboson.neocities.org). Known entries include titles such as:

Parasites Eye Contact Howdy, Cowboy! The Hometown Cryptid Club Here Funny Internet Video Demon One for Sorrow What Comes Next

(Plus a couple of side/bonus pieces.) In short, Togore Time takes a meme character and treats him as a fully realized person in a slightly expanded Hometown, using slice-of-life storytelling to explore family, friendship, quiet loneliness, and the everyday texture of the Deltarune Light World before the main story begins.

Toriel is the second major character the protagonist meets in Undertale. She saves the protagonist from Flowey and guides them through the Ruins, wishing to protect and to teach them to avoid the dangers of the Underground. Toriel is the former Queen of the monsters, the ex-wife of Asgore, the mother of Asriel, the adoptive mother of the first human, and the first boss, as she guards the Ruins exit.

Also known as Tori (Asgore, Alphys, Sans) old lady (Sans)

Relationships Asgore (ex-husband) Asriel (son) The First Human (adopted child) Sans (close friend)

Appearance Toriel with her reading glasses, seen on the title screen if the protagonist spares her. Toriel with her reading glasses, seen on the title screen if the protagonist spares her.

Toriel is a Boss Monster whose head resembles a white-furred Nubian Goat, structured with floppy ears and tiny horns. She has a pair of visible fangs and long eyelashes, and her irises have a dark red tint. She has an anthropomorphic body, with paws at the end of her limbs. She wears a long purple robe with white sleeves and the Delta Rune on the chest. Toriel can also be seen with reading glasses, when reading a book on snail facts.

Personality Toriel is a kind monster that acts as a protective mother figure for the protagonist. She is sincere in expressing her love through words and actions, such as when she was married to Asgore.[1] She employs tough love on the protagonist and Asgore. Toriel cares for children and was excited to become a mother.[2]

Toriel's hobbies includes baking, reading, writing puns, bug-hunting,[3] and tending to flowers. She enjoys baking Butterscotch Pie, as well as her favorite, Snail Pie. She has read many books in her home, and has a journal full of puns.[4] She enjoyed puns even before meeting Sans.[5]

Toriel is said to be intelligent[6] and can come off as intimidating when she is serious.[7] Toriel is meticulous in her goals, and was often referred by her title when she was the queen.[8]

Toriel aspires to be a teacher. She offers instructions on puzzles[9] and prepares a curriculum for the protagonist.[10] In the True Pacifist Ending Credits, she stands outside a school and, in the Family Ending of the Neutral Route, she starts her own.

Her full name is Toriel Dreemurr, she is also one of the three known Boss Monsters and a member of the Dreemurr family along with Asgore and Asriel.

Main Story Before the events of Undertale, Toriel was married to King Asgore and had a son, Asriel. When the first human fell into the Underground, she adopted them as their child. When the deaths of their two children pushed Asgore to declare war on humanity, Toriel became disgusted by his actions. She left him, retrieved the first human's body so she could give them a proper burial,[11] and remained in the Ruins.

Toriel often checks the entrance to the Ruins to tend to the bed of Golden Flowers[12] and aid those who fall into the Underground.[13] It is implied that she had cared for the previous six fallen humans in the same way she cares for the protagonist before their eventual depart.[14][15] Sometime after that, Toriel and Sans became friends over knock-knock jokes they shared at the Ruins's exit door. One day, she requested that he promises to protect humans that exit through the door.[16]

Neutral Route If you truly wish to leave the RUINS... I will not stop you. However, when you leave... Please do not come back. I hope you understand. Goodbye, my child.

Toriel, after being spared in battle.

Asriel Dreemurr (typically /ˈæzriəl ˈdɹiːmər/) is the biological child of Toriel and Asgore, the adoptive brother of the first human, and the former prince of monsters. He serves as the final boss of the True Pacifist Route, replacing Asgore in New Home. Despite his late introduction, his presence as Flowey as well as in Undertale's backstory makes him a major character.

Also known as God of Hyperdeath (True Pacifist Route) First Appearance New Home (True Pacifist Route) Relationships Toriel (mother) Asgore (father) The First Human (adopted sibling) Flowey (posthumous, soulless self)

Profile Appearance Asriel is a Boss Monster with white fur, long ears, a snout, and a set of visible fangs. In his child form, he lacks horns and has a small tuft of fur atop his head, unlike his parents. He wears a green long-sleeved shirt with yellow stripes and black pants, similar to the first human's clothing.

God of Hyperdeath This form is named directly in the game. During much of his battle, the "Check" option labels Asriel as "The Absolute GOD of Hyperdeath!" In this state, in contrast to his child form, Asriel has black sclerae with white slit pupils, longer fangs, a pair of horns, and black markings on the sides of his face. He wears a long robe with white sleeves and the Delta Rune symbol, akin to Toriel's robe, as well as a large collar with shoulder pads. He also wears a locket similar to the Heart Locket.

Final Form Asriel's body becomes more geometric, his horns are longer, and his claws and teeth get sharper. He has a pair of wings that continuously change color, and his lower body becomes sharp and heart-shaped.

While this form is not directly named, it resembles the Delta Rune, which looks like the "Angel of Death" from the prophecy.

Personality Before his death, Asriel was a docile, loving, and gentle child. Asriel was compassionate, as he helped the injured fallen human despite The War of Humans and Monsters. In the VHS Tapes, Asriel's dialogue implied he highly trusted the fallen human, as they continued their plan to break the Barrier to free monsterkind.[1]

As Flowey, he lacks a SOUL and becomes incapable of feeling love. This saddens him initially, as he blames himself for his fate.[2] Eventually, he became resentful and murderous.[3]

After temporarily regaining his compassion, Asriel regrets adopting the "kill or be killed" philosophy and apologizes for his actions to the protagonist, understanding that they may not forgive him.[4]

Deltarune is an official successor to Undertale, the cult-classic RPG! It is a parallel world featuring new characters and music, returning characters, and an upgraded battle system. Join Kris, Susie, and Ralsei on their quest to restore balance between Light and Dark!

After the game's paid release in 2025, it is still in development, with up to seven Chapters listed in the Chapter Select. Chapter 5 has been released! Chapter 6 is planned for 2027, and Chapter 7 currently has no release date. Any new events may also be informed via the official newsletter.

Deltarune is the second role-playing game in the Undertale series; independently developed by Toby Fox, with most art by Temmie Chang. It is released in multiple Chapters; its setting is a parallel world from Undertale's, with it having potential connections to its predecessor.[1][2] Deltarune is being developed in GameMaker, and has a large team of developers working on it.[3] Currently, the game is only available in English and Japanese, though Toby plans to announce if he intends to have the game translated in a different language.[4]

Deltarune's paid release was June 4, 2025 to coincide with the Nintendo Switch 2's launch date in Japan,[5] and Chapter 5 was released on June 24, 2026, as announced during the Nintendo Direct on June 9, 2026. Its price is $24.99, with subsequent Chapters intended to be released as free expansions to the paid version of the game.[6] For console versions, Deltarune only has to be bought once on a Nintendo or PlayStation console via cross-buy.[7] SAVE data can also be transferred from the demo to the full game. The official Deltarune FAQ page has further details on this, and emphasizes the option to import data only displays once.

Toby Fox has stated that official content releases for Deltarune and Undertale are from the official accounts, as well as from his Bluesky, Twitter, and Tumblr accounts.[8] Content releases such as anniversary events are also notified via the newsletter on the official Deltarune and Undertale websites.[9]

Gameplay Deltarune is an episodic role-playing game with up to seven Chapters listed. It features a party system where Kris leads their friends as they explore the Dark World and Light World.

The Dark World's gameplay features collecting items, solving multiple puzzles, and enemies being visible on the overworld. These enemies can be avoided by running or fought via encounters. These turn-based battles are the core of the game: each party member has a separate turn, where they can be set to perform a command: FIGHT, ACT/MAGIC, ITEM, SPARE, or DEFEND. FIGHT, as well as certain spells under MAGIC, can deal damage to an enemy.

Rudinn attack diamond cutter.png The SOUL dodging white bullet attacks The enemy's turn is a bullet hell segment where the player moves Kris's SOUL to dodge attacks for the party. The SOUL being close to an attack causes grazing to occur, which earns TP for the party to cast Spells.

The player can choose to defeat enemies via violence, or Recruit them via ACTing/Actions or casting Pacify on Tired enemies for a peaceful end. Both choices contributes to the Chapter's route end, which can have unique dialogue and slightly altered events in both the Dark World and Light World. Defeating the main or final bosses a certain way can also influence the Chapter's end.

In contrast, the Light World's gameplay is centered around interacting with Hometown and its residents. There are no battles, and SAVE points only appear in select Chapters. The menu is the simple one featured in Undertale.

For both worlds, the game is centered around character development that compliments the overall story. The player can select dialogue choices for short dialogue trees to influence cutscenes, engage in subtle quick time events, and investigate the game's world for potential new dialogue or secrets.

Deltarune has up to three SAVE files per Chapter, which can be duplicated and deleted, and encourages replaying a Chapter. The SAVEs work Chapter-by-Chapter, with choices and progress transferring to later Chapters via Completion FILEs. Using a Completion FILE is also optional, with the default file meant for "lighthearted" play.[10] The previous Chapter SAVEs can still be used without affecting the future Chapter SAVEs. Due to cutscenes being unskippable, dialogue can be sped up with the [CANCEL] button,[11] and text boxes can also be skipped by holding the [MENU] button.[12]

Synopsis Once upon a time, a LEGEND was whispered among shadows. It was a LEGEND of HOPE. It was a LEGEND of DREAMS. It was a LEGEND of LIGHT. It was a LEGEND of DARK. This is the legend of DELTA RUNE

Ralsei explaining the prophecy

The player is set to control Kris, a quiet human teenager who lives in Hometown, a small town populated by monsters. Upon going to school, Kris is paired to be in a group project with Susie, a rude and intimidating monster girl. While retrieving chalk from the supply closet, the two fall into a Dark World and meet Ralsei, a kind-hearted Dark Prince who reveals the prophecy to them:

The Legend soundtrack.png The three heroes The Dark World and Light World live in harmony with each other: Lightners are supported by the Darkners, who are living manifestations of objects in the Light World. It is foretold by the prophecy that the light and dark will fall out of balance and bring an apocalyptic disaster.

Kris, Susie, and Ralsei try to prevent this tragic fate. As the heroes destined to restore balance to both worlds, they journey through Dark Worlds to seal the Dark Fountains that the sinister Knight creates across Hometown. Throughout the story, the heroes meet new friends, experience personal growth, and form relationships. They begin to question the dynamic between Darkners and Lightners and the nature of the world as they uncover the mysteries surrounding Hometown's past, while Kris starts showing themselves more than unhappy with the player controlling them.

Alternatively, the player can derail the main story through specific criteria to start the Weird Route, a more corrupt route that drastically alters several key points in the story.

Chapter 1: The Beginning Main article: Chapter 1 Chapter 1 icon.png In which the player creates a vessel that gets abruptly discarded, then is set to control Kris. After Kris gets paired with Susie, the two discover the Dark World, meet Ralsei, and learn of their predetermined roles. The two Lightners venture to return home to the Light World, and are repeatedly impeded by a childish Lancer, who follows King's orders.

Chapter 2: A Cyber's World Main article: Chapter 2 Chapter 2 icon.png When Kris and Susie intend to return to Castle Town, Noelle interrupts and invites them to study with her and Berdly at the library. After their brief visit, the two Lightners discover the library has a Dark Fountain. In it, they meet the eccentric Queen, and find that both Noelle and Berdly fell into the Cyber World.

Chapter 3: Late Night Main article: Chapter 3 Chapter 3 icon.png Susie and Kris wake up to find the Dreemurr residence has transformed into a new Dark World. Shortly after, Ralsei reunites with them, and Susie tries to invite him to an upcoming Hometown event. Ralsei informs that he cannot, and explains the truth about the Dark World. As they converse, an enthusiastic Tenna interrupts and invites the heroes to his TV Time game show.

Chapter 4: Prophecy Main article: Chapter 4 Chapter 4 icon.png Toriel brings Kris and Susie to church for service. Afterwards, the two search for clues for the shelter codes, including at Noelle's House. When Susie and Kris are suddenly dismissed, they return to the Dreemurr residence, only to realize they are locked out. In search of Toriel, the duo discover that a Dark Fountain has been created in the church. As the heroes navigate the Dark Sanctuaries, they come into conflict with the Knight, learn more of the prophecy, and meet the wise Old Man.

Chapter 5: Festival Day Main article: Chapter 5 Chapter 5 icon.png Kris finds Susie in Castle Town, where Darkners help Susie prepare for the upcoming event. Upon exiting the school, Kris and Susie notice Noelle nearby, who lets Kris lead them around the Festival. Eventually, they spend time at the lake, culminating in Susie making an excuse to temporarily leave, and Noelle forcibly leaving after an emergency phone call. Shortly after, Susie enters Flower King to purchase flowers. As she exits the building, a new Dark World forms in it, prompting Susie and Kris to investigate. In Flower Kingdom, they find Kris's father alongside the unconventional Flowery, who keeps distracting him from the heroes.

Game information Development Main article: Development history Development for Deltarune is separated by Chapters, with upcoming Chapters currently in development. The following consists of a timeline of general development for the game, with information from social media posts, Status Updates, newsletters, and interviews:

Pre-development Lancer artwork kanotynes.png Lancer's playing card as jack of spades in Kanotynes's deck project,[13] now an official merchandise[14] In 2011, the concept for Deltarune came from a fever dream Toby Fox had in college, which depicted an ending to a video game. He was determined to make a game with this ending into a reality.[15]

In April 2012, Toby saw Kanotynes's playing card character designs on Tumblr, which inspired him to make an RPG.[16][17] He had asked for permission to use them,[18] then began development in 2012 on music tracks, created images of Lancer, and wrote script dialogue for characters such as Susie, Lancer and Jevil.[19][20] Despite this, the unnamed RPG's development was abandoned before he could create a single room.[21][22] This RPG idea led to the creation of Undertale, and the original RPG idea later transformed into Deltarune.[23]

During the 2013 Undertale Kickstarter, Toby decided that if he could complete Undertale, Deltarune would be a mix of Undertale and the dream concept.[24] While Deltarune is not listed by its name on the Undertale Kickstarter, it is described as "another game".[25] In a post detailing the Kickstarter's last Stretch Goal, Toby states he will write scripts for Undertale comics and "Another game", which expands on Undertale's world and characters.[26] At the end of the post, Toby describes the other game as being "shrouded in darkness".[27] During and after the campaign, Toby had created image files of Susie.[20]

Initial development Sometime in 2014 through 2015, Toby begun development for Deltarune by writing, sketching characters, and drafting concepts such as spells.[28] At an unspecified time, Toby shared early parts of Deltarune with Gigi D.G. and Chess.[29] From 2014 through 2015, Toby made concept art of the four main characters.[30] As of 2015, he had done sketches of Susie, Ralsei, and Noelle,[31] had text files for possible dialogue and choices,[32] and piano arrangements such as The Sunset of 7 Suns.[33]

Following Undertale's release in September 2015, the game's success gave Toby more time to develop Deltarune.[34] He developed the Chapter 1 demo by himself, which took a few years longer than the Undertale Demo.[35]

Him increased contrast.png him.png, from deltarune.com from 2016 to 2017, with increased contrast As early as December 2015, deltarune.com's main page was entirely black. The site did not have a favicon or a page title, and only contained a low-contrast image titled him.png.[36][37] This image uses the Wingdings font and depicts a line from Undertale's Entry Number Seventeen from W.D. Gaster: "THIS NEXT EXPERIMENT SEEMS VERY VERY INTERESTING".

In two follow-up responses to Undertale's success, Toby's comments appear to hint at Deltarune and the site's appearance on December 31, 2015, as the last post mentions "a burning, inexplicable feeling", the very nature of which is "shrouded in darkness",[38][39][40] a term previously used to allude to "another game".

From 2016 through 2017, the image was replaced and updated to have a line from Deltarune's prophecy. This line was also uppercase and in the same font: "THREE HEROES APPEARED TO BANISH THE ANGEL'S HEAVEN".[41] In July 2017, the Before the Story track was also teased as part of a PlayStation 4 Undertale dynamic theme for Undertale's console release.[42]

During the three years, Toby often woke up in the middle of the night, and was unable to sleep due to thinking about potential scenes for Deltarune.[43] As early as 2016, Toby was devising character interactions for the second half of the story, writing some Chapter 5 initial scripts.[44] He also begun properly studying Japanese to help Keiko Fukuichi with smoother translations, and occasionally offered ideas such as first person pronouns.[45][46][47] Toby was also supported by 8-4, Ltd. with the Japanese localization,[48] and the Fangamer staff consistently supported Toby in his projects.[49]

Upon completing Chapter 1, Toby was concerned about his mental health, and realized that it is "not possible" to develop Deltarune by himself and Temmie, as it is complex in programming, writing, cutscenes, and art. Thus, Toby wanted Deltarune to have a larger development team.[3] In his TwitLonger post, he admitted some concern as he has never directed a development team before.[50] The game's complexity also includes halting development for the UNDERTALE Alarm Clock, as Toby also wanted Chess to help develop Deltarune.[51] Unlike Undertale, Toby did not want to prepare a Kickstarter campaign for Deltarune.[52]

Overall development For all people involved with its development, see Deltarune developers. Deltarune Dark Fountain artwork.png Promotional art of Susie, Kris, and Ralsei in front of a Dark Fountain for console release[53] Post Chapter 1's PC release, 8-4 Ltd. published the console versions of Deltarune, starting from the Nintendo Switch and PlayStation 4 Chapter 1 demo in 2019. These versions and later versions have programming by returning programmer Sarah O'Donnell, who handles the console ports for Deltarune starting from 2019.[54]

Toby focused on overall development flow for the game in 2019.[55] This includes a readable outline for all Chapters, major events, and battles.[56] He intended everything to have a "never-before-seen gimmick", at the cost of development being inefficient.[57] In general, Toby considered working on each Chapter the equivalent to developing a game.[58] During and after the Chapter's development, it is playtested by some of the Fangamer staff,[59][60] Toby's friends,[61] and is super tested by DruidVorse. On release, the team actively searches for glitches that players may have so that it can be patched as soon as possible.[62]

Since Chapter 2, Toby works with the development team while being physically restricted from his wrist pains.[63] He has been primarily directing than programming, as he cannot program for long periods of time anymore.[64] Despite this limitation, Toby is highly involved. He gives feedback on any part of the game,[65] reads through all Japanese translated sentences,[66] occasionally goes on call to give explicit directions,[67] and ensuring that everything is enjoyable and matches his intentions for the story.[68]

Including Toby, the team has members working every day, with other people occasionally contributing with programming, art, and music.[69] Starting from Chapter 2, the main development team includes Temmie,[70] Sarah,[71] Taxiderby,[72] Fred Wood,[73] Jean Canellas,[74] and Xan Wetherall.[75][76] On September 2020, team applications were available for Chapter 3 onwards,[77] with up to 1,000 applications sent in less than a day.[78] During Chapter 2's development, AlexMdle and PureQuestion were hired as super testers,[79] and Sara Spalding assisted with difficult programming.[80][81] They all later became part of the main team as programmers for future Chapters.

Despite new people being hired, general delays occurred during Chapter 1&2 Demo's development and patching period. In March 2019 through May 2020, the team had largely spent time in search of an alternate game engine to GameMaker. In the end, Toby decided to stay with GameMaker as he felt as it was the "best fit for the project".[82] The 1&2 Demo was also made as a single project, which caused issues when patching the game.[83] The team had to retest each Chapter per patch until the game_change function was added by YoYoGames,[84] which was later tested publicly by players via the LTS 1&2 Demo.[85]

On October 2023, Toby announced that he hired a new producer to help speed overall development for later Chapters, starting from Chapter 4.[86] The new producer was later revealed to be Robert Sephazon on Deltarune's paid release.[87] In Spring 2024, Toby mentions that production has improved thanks to Robert Sephazon, and that new people were hired.[88] These new hires were later revealed to be Enjl,[89] Joost,[90] and Andy Brophy,[91] who all became part of the development team during Chapter 4's development.

Release For all pre-release social media posts, see Voice § Outside of Deltarune. Due to Chapter development being the equivalent to a game, most of the Chapters and the corresponding DELTARUNE Soundtracks have separate release dates. Each pre-release for the Chapter has a trailer, which is created by Everdraed,[92] and occasionally has music from guest contributors. The official deltarune.com website is often updated to reflect these releases, which is primarily performed by Ryan Alyea and Brian Coia. The voice also often makes pre-release posts on the official Bluesky and Twitter.

Chapter 1 was released for free on PC and Mac on October 31, 2018. The Chapter 1 soundtrack was released on November 1, 2018. Subsequent Chapter 1 demo versions for the Switch and PS4 was released in 2019, with Switch 2 and PS5 versions being a part of the paid release in 2025. In 2019, a Chapter 1 Spoiler-Free Trailer was released, and features DOGTARUNE (Trailer).[93]

Chapter 2 was released for free on PC and Mac on September 17, 2021 as part of the Deltarune Chapter 1&2 demo. The Chapter 2 soundtrack was released alongside the demo. The Switch and PS4 versions of the demo was released on September 23, 2021, with Switch 2 and PS5 versions being a part of the paid release in 2025. For Chapter 1&2 Demo's console release, the trailer has Toby in an Annoying Dog suit,[94] and has Rakuichi Buster, an originally fan-made rendition by Rakuichi.[95][96]

Similarly to the paid release for Undertale, Toby made social media posts stating variants of "Deltarune tomorrow" prior to its release.[97][98] Both Temmie and Fred have also made similar posts on June 3, 2025.[99][100]

Chapter 4 artwork trailer.png The heroes as depicted in the 2025 trailer[5] Deltarune's paid release was on June 4 2025 on most platforms; it includes Chapters 3 and 4,[101][102] and the Chapters 3+4 soundtrack was released alongside it. The trailer for the paid release contains Toby returning in the dog suit, a polished arrangement of Game Main Theme (Piano Sketch) by Camellia,[103] and a sepia animation of the heroes by Temmie Chang.[104][5]

Chapter 5 was released on June 24, 2026 as a free update to the paid release alongside the DELTARUNE Chapter 5 OST. The 2026 trailer features trailer music by Carlos "insaneintherainmusic" Eiene, and its end animation by Temmie.[105][106]

Chapters 6 and 7 will also be free updates;[6] 6 is set to release in 2027,[107] and 7's release date is unknown.

Deltarune does not have a native Linux version, but the Windows version works on Linux using compatibility layers, and is verified on Steam for the Steam Deck. Although Undertale was ported to Xbox One, there has been no word on an Xbox version of Deltarune. This may be because game_change, a feature used in Deltarune as of 1&2 demo's v1.16, does not support Xbox.[108]

Version differences Main article: Version differences § Deltarune Deltarune has received a number of patches, with the paid release being the full version of the game. It is periodically updated as its development continues. All console versions of Deltarune have optional dynamic borders, around the game.

Anniversaries For Undertale's Anniversaries, see Anniversary on Undertale Wiki. Happy Halloween artwork.png Art of Kris, Susie, and Ralsei in costumes for Deltarune's 6th Anniversary, by Temmie Chang[109] Deltarune's official Anniversary date is October 31, which is Halloween and coincides with Chapter 1's PC release date. This Anniversary date is intentional.[110] However, events that pertain to Deltarune more often occur on Undertale's Anniversary date, which is September 15. This is due to Toby Fox also considering it a day to celebrate Deltarune.[111]

An overview of Deltarune Anniversary posts/related events is documented below: