This article has a talk page!This is a sub-page of Prerelease:Deltarune.
Chapter 5 was released on June 24, 2026, to much fanfare. Though, like the other chapters, it took a while for it to release. Thankfully, the wait between Chapter 4 and 5 was a lot shorter than the wait between any previous chapters.
Early Music#
The Sunset of 7 Suns#
On June 21, 2026, Toby released an early piano sketch of "Sunset of 7 Suns", accompanied by a video of the seven flowers located in Flower King (essentially finally, truly confirming where the fifth Dark World would take place) and falling petals with corresponding colors.
10 years ago I made a song that sounded like this. It's called "The Sunset of 7 Suns." This is the hope for Chapter 5 from 10 years ago. When I played this on the piano, my mom said "you know, usually songs do more than just repeat..." Sorry Mom. Anyway, the version in-game sounds very different. Don't be surprised.
(Source: @tobyfox - Twitter)
pink_old_added_2026.mp3#
An early chiptune sketch for Cutie Mew Mew Magic that Toby handed off to Camellia to flesh out.
For this song, I arranged a demo of the first dozen seconds, and sent that alongside a few minutes of me playing the piano and singing. I also provided a text description of each part. Camellia did all the actual work beyond that. Lol. Anyway the chiptune demo I gave him was originally just the first 6 seconds of this plus the melody but I added some more just now to make it worth listening to thanks.
flowery_battle_idea.mp3#
An extended piano sketch for Flower Man, used as a basis for Camellia's arrangement.
I actually tried to create this song by myself multiple times, and even tried multiple times to collaborate with different musicians to try to do a live version with vocals… But nothing turned out right with the samples I was using, so I ended up begging Camellia to arrange it. Here’s the earliest piano outline.
(Source: CHAPTER 5 THOUGHTS)
Status Updates#
September 2020#
Toby gives percentages for the development progress of chapters outside of Chapter 2. Overall, the chapters past Chapter 2 are extremely bare-bones, with even the story beats being in a first-pass state. Programming and map design has not begun at all. The chapters are only mentioned as "Chapters 3+", not indicating exactly how many chapters there will be. Chapter 5 is not mentioned.
Once we finish Chapter 2, I would like to use it as the base to create future chapters from. After gaining experience from this chapter, I think making future chapters will be easier.
(Source: DELTARUNE Status Update - Sept 2020)
September 2021#
Toby announces that Chapters 3, 4 and 5 will be developed and released together as a paid release. He does not give a release date, or even a release window. Previously, Toby had stated that he wanted to "release chapters only when all them are finished", but realized it is extremely difficult for fans, developers, and creators alike to have to wait so incredibly long for a release.
My next goal is to complete Chapters 3, 4 and 5 for next time. Then, at that time I will ask for people to buy the game, at the price of the first 5 chapters (including 1 and 2). I don't know the price yet, but it's definitely going to cost more than UNDERTALE. So, next time you want to ask "when's chapter 3", you can ask "when can I buy Chapter 3/4/5? I'll give you a lot of money". ... I won't know the answer until it's done, though.
(Source: DELTARUNE Status Update - Sept 2021)
September 2022#
Toby reaffirms that Chapters 3, 4 and 5 are being simultaneously worked on; however, the team has mostly done work on 3 and 4. Nothing from Chapter 5 is teased, and Toby states that the chapters will not release this year.
As stated last time, we've been simultaneously working on Chapters 3, 4 and 5 of DELTARUNE. A few more people are helping out, and the pace of the game creation is definitely improved from last time. The intention was to work on all three chapters simultaneously, but so far we've mostly just gotten work done on Chapter 3 and 4. Sorry, nothing's ready to release this year. So you can't spend any money yet.
(Source: DELTARUNE Status Update - Sept 2022)
Newsletter Updates#
Halloween 2023#
Chapter 5 is announced to be held off from the paid release.
My original plan was to release Chapter 3, 4, and 5 together. However, the finish line of Chapter 5 is still pretty far off... and I don't think anybody really wants to wait that long to release anything. Especially me.
Summer 2024#
Most of the team was still working on Chapter 4, but a few map drafts and bullet patterns for Chapter 5 were being developed.
Initial development of Chapter 5 is also progressing steadily. Most of the team is still focusing on Chapter 4, but a few people are going ahead and creating an initial draft of Chapter 5's maps, working on bullet patterns, etc.
Fall 2024#
Chapter 5 is briefly mentioned again, with the entire team (outside of bug fixers, localizers, and people working on the console ports) now at work on it.
Anyone not working on localization, console porting, or fixes, is now working on Chapter 5. This will be the main focus for us moving forward.
(Source: Undertale/Deltarune Fall Newsletter 2024)
Winter 2024#
It is mentioned that "more recent hires" had been working on Chapter 5 while Chapters 1-3 were having bugs fixed.
Some team members had to focus on Chapter 1, 2, and 3 bugfixes for a while, but our more recent hires have able to work on Chapter 5 during that time, so progress has still been steady!
Fall 2025#
Some sprites and a clip of an optional cutscene from the Chapter were provided. In the final game, this plays the first time the player knocks on the Mike Room's door in Castle Town. It is stated that "early parts" of Chapter 5 are complete but need polishing, and regular enemies and boss attacks are mostly done. Toby does not expect the chapter to release in the first half of 2026.
That's right, last time, DELTARUNE Chapter 3 & 4 came out. I really want to look back on these Chapters and discuss my thoughts!
But... I don't have time to do that right now... The anniversary is coming up.
There is no time to discuss this now... Instead, let's talk about Chapter 5!
Some of you might be wondering what kind of Chapter it is... Well, right now, there is no reason to tell you that...
Completion Estimates#
Toby would also provide some estimates about the completion of the chapters in the newsletter. The following is a truncated version of Toby's own words.
As of September 8, 2025:
- The early parts of Chapter 5 are complete, but some optional areas need polish.
- Most of the last half of the game is in a "rough first pass" state, and the rest of that is in a "prototyping" state.
- This likely refers to the Flower Castle segments being halfway complete at best.
- Most of the Chapter's cutscenes are in their first draft, but at least 20% or so will require more polish before considered complete.
- Regular enemies are mostly done, and preliminary work has begun on Chapter 6's regular enemies.
- The direction of the boss battles (likely the Seven Flowers) have been decided and many boss attacks have already been completed.
- Once the attacks are finished, the next goal will be to arrange the attacks and make adjustments to them if necessary to fit the atmosphere of the battle.
Overall, Toby states that all the major hurdles have been passed, and the game is nearing the final stages of creation. The next steps are, as always, localization, porting, and testing. After these are complete, the game will be released. Toby also states that he anticipates localization beginning by the end of 2025. As of now, he doesn't see Chapter 5 releasing in the first half of 2026.
Anyway, we don't have any external factors surrounding the release date this time. We'll release it when it's done, and we will continue to update you guys on the progress of its completion. Thanks!
(Source: Undertale/Deltarune Fall Newsletter 2025)
Winter 2025#
Another clip from an optional cutscene in Chapter 5 is released, this time only for if the player kept Tenna in their town in Chapter 4. In the final game, this one plays if the player knocks on the Mike Room's door after viewing the first cutscene showcased back in Fall 2025. As anticipated, Chapter 5's localization has begun, and once it reaches its final stages, testing will begin with a professional testing team. Toby says how the game runs on consoles will begin being examined in January, and that he estimates it will take several more months for the chapter to release. He doesn't give an exact release date.
Every room is reportedly more or less finished, save for some backgrounds, nearly all cutscenes are finished, with a "single digit amount of them" still needing visual polish, and most of the battles are complete, save for a couple that are playable from start to finish but still need adjustments to their pacing and bullet patterns.
Flower Castle Track#
According to Marcy Nabors, Toby "sent her a full multi-track acapella demo [of "Flower Castle"] for her to transcribe to MIDI before sending it back over to him to arrange". She transcribed the song at the same time as "Underwater Town" and "Abandoned Town" for the UNDERTALE 10th Anniversary Stream Soundtrack, which was released on September 15, 2025.1
Localization Excerpts#
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To do:
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On December 1st, 2025, Toby gave a screenshot of a small snippet of Chapter 5's script with some annotations, to prepare for the localization to Japanese.
(Source: @tobyfox.undertale.com - Bluesky)
On January 1st, 2026, Toby replied that "there was more that I forgot to post" and posted an image with additional dialogue. 
(Source: @tobyfox.undertale.com - Bluesky)
Translation Notes |
Speaker |
Dialogue |
Notes |
|---|---|---|---|
this is their usual dialogue but they're confused an |
koody |
* The way..^1. of the worm...?)/ |
Used by the worm in Castle Town near the boutique. |
caked up = totally covered in make up, but it also |
* (Is..^1. this the way of the worm^1? To be totally caked up?/% |
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system |
* You used the Annoying Dog!/% |
Used when the item "Dog" was selected during the battle against Yellow and Blue. |
|
reference to |
* It was deployed like an off-brand missile!/% |
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system |
#Adventures,#like Quests |
Used if you try to open the school door with Susie and Noelle during the festival. |
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#Pretend to#be a dog |
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seam |
\E0* Kris^1, I suppose I owe you an explanation about all this^1. No^1, you no doubt have realized yourself by now.../ |
Used after collecting the Shadow Crystal from Hammer of Justice. |
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\E3* The Shadow Crystals are far more than mere pieces of glass^1. In actuality^1, they contain a certain power./ |
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\E0* You could call this the power of "will"./ |
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\E1* ..^1. No^1, perhaps "will" isn't right^1. The power they contain is.../ |
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system |
* (Green apple shampoo.)/ |
Used when interacting the shower at the beginning of the Chapter. |
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* (..^1. you wonder if Susie would recognize you if you changed to a different fruit.)/ |