Deltarunehas delivered a new updat that solves a lot of nagging problems that arrived alongside the release of Chapters 3 and 4. The changes toDeltarunein the latest patch include fixing multiple instances when players could get softlocked out of progression in the episodic role-playing game, along with several other troubling issues.
After a long wait,DeltaruneChapters 3 and 4 were releasedon June 5, giving players a double dose of new story and action nearly four years after the release of the previous chapter. The follow-up to Toby Fox’sUndertalecontinues to delight fans, with more than a quarter of its user reviews on Steam pouring in over the last 30 days and both recent and all-time reviews carrying an astounding 98 percent approval rating from players.
However, despite that very welcome reception, the latest installment of the game hasn’t been completely without its issues. The developer has been active in updating the game to iron out problems, however, having already released four other patches and hotfixes since the launch of chapters 3 and 4. Now, Patch 1.03 addresses three different areas where players attempting tobeatDeltaruneChapters 3 and 4can get stuck. Two of these instances occur in Chapter 3, with the first previously locking players out of progression after using three keys on Board 1, and the second locking the game up for players who fail to reach the Power Croissant. Another fix has been added to Chapter 4, preventing a softlock if the tutu is not returned to the player.
In addition to these progress blockers in the new chapters, there has been a softlock issue occurring in Chapter 2 on theNintendo Switch 2 version ofDeltarune. This particular problem had been holding up player progression following the section of the game in which players were tasked with catching mice using the baskets on their heads, but it has also been resolved. Along with softlock issues, the new update resolves several other problems players have been experiencing, including a crash that can occur in Chapter 3 if players push the pyramid in the wrong direction and a freeze-up issue that occurred in Chapter 4 when players attempted to change the octave on the giant organ.
There have also been changes to a few differentbosses inDeltarune. In Chapter 3, the Sword Tunnel attack of one boss, whose name seems to have been intentionally omitted, has become easier to dodge by reducing the size of the attack’s hit box. Additionally, Jackenstein in Chapter 4 doesn’t show any signs of change initially, but players who have already lost that fight two times in a row will see pumpkin damage cut in half on subsequent attempts, and TP gain increased by 50 percent if they fail a third consecutive time.
Deltarune Version 1.03 Patch Notes (July 24, 2025)
Chapter 2
[Switch 2-only] Fixed a softlock in the part where you catch mice in a basket on your head.
Chapter 3
・Swords used in a certain boss’s “Sword Tunnel” attack now have a reduced hit box relative to the graphic, making the attack easier to dodge.
・Fixed a softlock on the Board 1 that could occur after using only three keys.
・Fixed a soft lock if a party member fails to reach the Power Croissant.
・Fixed a crash if you pushed a pyramid the wrong way.
・Fixed an issue where on certain platforms, the sprites of the game would become blurry after the Tenna scene.
・[PC-only] Fixed a visual issue where after defeating Tenna, it was erroneously showing texture data instead of static on certain computers.
Chapter 4
・If you lose to Jackenstein 2 times in a row, the amount of damage that the chasing pumpkin deals will be halved. If you lose 3 times in a row, TP gain will be increased by 50%. These changes will allow players who find this battle difficult to progress past it more easily.
・Fixed a softlock which could occur if the tutu was not returned to you.
・Fixed an issue where normal battle music would not play if you fought Mike at the beginning of the game. (This issue becomes resolved after fighting Jackenstein.)
・Fixed an issue with a hitbox not working when a boss dives at you from many different directions. (The hitbox will be adjusted more later)
・Fixed an impossible note on the song “Knock You Down!!” in the rhythm game.
・Fixed an issue where Kris would still appear to be wearing their church clothes even though they’d been removed.
・Fixed an issue where asking Ralsei advice for a puzzle would simply result in him saying a single button.
・Fixed an issue where changing octaves on the giant piano organ thing could freeze the game.
・Susie and Ralsei no longer erroneously appear in the rhythm game at Castle Town at the end of the Chapter.
Various Chapters
・Fixed an issue where the intro prophecy would always be skipped after selecting a chapter using a controller.
