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Undertale’s Toby Fox celebrates 10 years of the seminal RPG by letting you create your own pixelated avatar and record a memory, but it crashed almost immediately

Deltarune Chapter 3 was originally supposed to be even longer, as the devs “made most of” a third TV Time gameshow round before it was cut

Deltarune just got another small update, but I’m more interested in this brief, fine-print teaser for upcoming patches containing “some extremely slight adjustments to gameplay”

Toby Fox worried two Deltarune villains were too similar for anyone to “really care,” but he’s come to think they’re “characters who mutually enhance each other”

17 years after it was released, I’m tracing Undertale and Deltarune’s origins back to Toby Fox’s spooky Earthbound mod

Toby Fox created a beloved Deltarune villain “a long time ago,” and had to abandon many ideas like using an Xbox Kinect and making them dance using a Hatsune Miku animation program

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Scott McCrae

15 September 2025

Also, Undertale is 10 years old today!

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(Image credit: Toby Fox via Nintendo of America)

Toby Fox has confirmed that Deltarune Chapter 5 probably won’t be released until after the first half of 2026.

10 years ago today, Undertale released and Toby Fox quickly became one of the most beloved indie developers of all time. The game ended up making appearances in Super Smash Bros. Ultimate, All Elite Wrestling, and two separate times for Pope Francis, with Fox himself contributing music to the likes of Smash Bros. and two Pokemon games. But while Undertale has left a lasting legacy, all eyes are on Deltarune.
In a post celebrating Undertale’s anniversary, TobyFox gave an update to Deltarune Chapter 5, with a detailed breakdown of various elements of the game. Fox confirmed that “the early parts of Chapter 5 are complete, but need polish in optional areas,” while saying “Maybe the last 40%-or-so of the game is in a ‘rough first pass’ state, and the last 10% is in a ‘prototyping’ state.”

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Undertale’s Toby Fox celebrates 10 years of the seminal RPG by letting you create your own pixelated avatar and record a memory, but it crashed almost immediately

Deltarune Chapter 3 was originally supposed to be even longer, as the devs “made most of” a third TV Time gameshow round before it was cut

Deltarune just got another small update, but I’m more interested in this brief, fine-print teaser for upcoming patches containing “some extremely slight adjustments to gameplay”

Fox notes that there were some hurdles with Chapter 3 and 4 that made development difficult, but that “Chapter 5 was not without hurdles! But… we already passed all of the obvious ones, so there’s little to get in our way now! We just need to keep making the game.” As for deadlines, Fox confirmed that the team has “one main deadline,” that “I want to begin the translation by the end of 2025.” Fox notes that “After that point, gameplay changes will be acceptable, but large-scale text and story changes will be heavily frowned upon.”

With all of that in mind, Fox noted that “I don’t think that the game will be released in the first half of 2026.” But there is some good news to go along with it, saying that “we don’t have any external factors surrounding the release date this time,” presumably in reference to the game launching alongside the Switch 2. Because of this the Deltarune team will “release it when it’s done, and we will continue to update you guys on the progress of its completion.”
Deltarune’s beloved Spamton is everywhere and Persona 3 fans are turning Japan’s real-life Port Island into a JRPG mural in this viral web app that’s seeing pixel artists literally take over the world.

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Scott has been freelancing for over three years across a number of different gaming publications, first appearing on GamesRadar+ in 2024. He has also written for the likes of PC Gamer, Eurogamer, VG247, Play, TechRadar, and others. He’s typically rambling about Metal Gear Solid, God Hand, or any other PS2-era titles that rarely (if ever) get sequels.

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Undertale’s Toby Fox celebrates 10 years of the seminal RPG by letting you create your own pixelated avatar and record a memory, but it crashed almost immediately

Deltarune Chapter 3 was originally supposed to be even longer, as the devs “made most of” a third TV Time gameshow round before it was cut

Deltarune just got another small update, but I’m more interested in this brief, fine-print teaser for upcoming patches containing “some extremely slight adjustments to gameplay”

Toby Fox worried two Deltarune villains were too similar for anyone to “really care,” but he’s come to think they’re “characters who mutually enhance each other”

17 years after it was released, I’m tracing Undertale and Deltarune’s origins back to Toby Fox’s spooky Earthbound mod

Toby Fox created a beloved Deltarune villain “a long time ago,” and had to abandon many ideas like using an Xbox Kinect and making them dance using a Hatsune Miku animation program

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