Deltarune Possibly Releases Its Final Update

Deltarune has released update 1.04 on all platforms, with the developer hinting that this might be the final patch. Following the release of Deltarune’s Chapters 3 and 4, the developer has rolled out a couple of patches to polish the game and address some errors, and it seems like Toby Fox is done updating the game after patch 1.04.

Following Undertale’s redefining gaming experience, Toby Fox released Deltarune, building upon the key elements of his previous hit. While not a direct sequel (or prequel), Deltarune is a spiritual successor that presents a parallel story to Undertale, sharing its core themes and characters but set in a different continuity. Still, Deltarune holds the quirky, unique role-playing style of Undertale, inviting players into a mysterious realm called the Dark World where they must face various creatures in turn-based combat mixed with bullet-hell elements—though still allowing players to choose between fighting or sparing enemies, like in Undertale. Chapters 1 and 2 were released in 2018 and 2021, while Chapters 3 and 4 launched on June 5, 2025, on the Nintendo Switch 1 and 2, PC, and PlayStation.

Deltarune has special dual-mouse controls on Switch 2

Deltarune Has a Feature Exclusive to the Switch 2

Deltarune includes a special feature only available on the Nintendo Switch 2, making Chapters 3 and 4 feel a little bit more special.

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By Matthew Schomer

Now, the developer has dropped a patch to make Deltarune Chapters 3 and 4 run a little better. Alongside the patch notes for update 1.04, the developer noted that “We have no other patches planned at this time.” While it didn’t explain much, this could mean that the latest patch is likely the final update Deltarune will see. Luckily for fans, changes and improvements have been rolled out to all available platforms.

Much like the previous Deltarune update released in July, this patch tackles a lot of bugs in Chapters 3 and 4, and a few more for the rest of the chapters. In Chapter 3, players were running into two crashes: one when throwing a shell and checking it as it breaks, and another when checking waterlogged binoculars—both issues have now been resolved. Chapter 4 also saw a few errors fixed, along with a slowdown in the speed of bullets for one of Jackenstein’s attacks. Moreover, two fixes addressed issues affecting only the Switch 2 version, involving the “Main Performance” minigame and a bug at the end of battles.

The overall game also received some minor visual and text fixes, as well as a solution for a problem with keyboard customization when connecting a new controller. As players continue exploring Chapters 3 and 4, Deltarune’s developer has already confirmed the release window for Chapter 5 for 2026.

Deltarune Update 1.04 Patch Notes

Chapter 3

Added a method to get “TripTicket” even after receiving “ShadowMantle”.
You can no longer erroneously keep Lancers in your inventory.
Susie doesn’t slide weird after battle in that room where she kicks the houses. Apparently this is better.
Fixed an obscure softlock during the Pushing Buddies sequence.
Fixed a frame perfect game crash if you throw a shell and check it as it’s breaking.
Fixed a frame perfect crash involving checking water-logged binoculars.

Chapter 4

You can get the “SpinCake” from the “Top Chef” if you gave him the “TopCake” in the “Chapter1”.
Reduced the speed of the bullets on one of Jackenstein’s attacks.
Fixed an obscure issue if you used “OldMan” ACT and then spared Guei before the attack started.
Toriel no longer answers the phone at the beginning of the Chapter.
You can no longer check a nonexistent snack tray.
Fixed an error where “Dual Heal” ACT could be skipped in certain scenarios.
Fixed an error where Susie’s turn would be skipped if she used an item during the boss of the Second Sanctuary.
[Switch 2-only] Fixed an issue with the minigame “Main Performance” where barely matching the correct colors would cause them to not light up.
[Switch 2-only] Intentionally getting hit with cats at the end of a battle no longer softlocks the game.

Various Chapters

Fixed various minor visual errors.
Fixed minor text and font issues.
Fixed an issue where your customized keyboard controls could be reset when connecting a new controller.
Fixed an issue where plugging in USB and Bluetooth controllers simultaneously could cause repetitive button presses.

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