Deltarune Wiki

Like Undertale, its predecessor, Deltarune has received a number of updates, both to fix bugs and sometimes add new content.

Chapter 1 Demo[]


Initial release on October 31, 2018.[1]

PlayStation 4/Nintendo Switch[]

Chapter 1 was ported to consoles on February 28, 2019. Minor changes were made.[2]

  • Changed "Kris got the Hot Chocolate." to "You got the Hot Chocolate," matching other item acquisition text.
  • Addition of a new debug menu.
  • Added a version number.
  • Miscellaneous fixes and typo corrections.

Chapter 1&2 Demo[]


Initial release on September 17, 2021.[3]
v1.002 added a question mark icon for unknown controller inputs.
v1.003 fixed several crashes relating to game controller configuration on September 18, 2021.[4]
v1.004 fixed several miscellaneous crashes and softlocks on September 19, 2021.[5]
v1.0.5 was released on September 21, 2021.[6]
  • Added an option to give up during the GIGA Queen battle.
  • Added several autosaves, providing more convenient respawns upon dying in certain places:
    • Before the Queen battle. This save also restores party HP.
    • Before the teacup ride in the Mansion Basement.
    • Moved the autosave before the Spamton NEO battle, now allowing Kris to not insert the Disk and simply leave.
  • Fixed a bug where Noelle would retain her SnowGrave spell if Berdly was spared in his Cyber City battle. Defeating him with IceShock or melee attacks still allows her to retain the spell, however.
  • Miscellaneous bugfixes.
v1.06 was released on September 23, 2021.[7]
  • Allowed the Glass to properly appear in the inventory if Kris has a Shadow Crystal.
  • Fixed a bug where Sweet Cap'n Cakes's attacks could be extremely long.
  • Added an anger mechanic to the Spamton NEO battle. Firing many "big shots" by using the Z and Enter keys at the same time now causes Spamton to turn red, dealing extra damage.
  • Fixed an issue with warping to a room's default point if a room transition was only touched momentarily. It can still be triggered by holding X and C; this was likely intended for speedrunners, who always hold these keys to skip text and run.
  • Miscellaneous bugfixes.
v1.07 (v1.03 on console) was released on September 30, 2021.[8]
  • Added the functionality of holding X during attacks to slow the SOUL, allowing for more precise movement in battle.
  • Defeating Jevil now gives a Shadow Crystal immediately, like Spamton NEO. New flavor text was added for using the Shadow Crystal or Glass in Chapter 1.
  • Added the ability to skip to Cyber World using Kris's bed if Chapter 2 has already been completed, like Chapter 1.
  • Added dialogue if enemies were defeated violently in Chapter 1.
  • Slight changes to Spamton NEO's difficulty.
  • Improved "FluffyGuard," Ralsei's R-Action against Spamton NEO, by allowing holding X to stop the ball's rotation.
  • Added the rare "Ms. Pipis" variant of the Pipis enemy.
v1.08 (v1.04 on console) was released on February 23, 2022,[9] and retracted several hours later due to a bug.[10]
  • Added new dialogue after the Rouxls Kaard battle if Rouxls was defeated violently.
  • Fixed a bug where Ralsei would not snap desperately against Spamton NEO.
  • Changed the description of ACT in the Power menu in Chapter 2 from "Do all sorts of things. It isn't magic." to "You can do many things. Don't confuse it with magic."
  • Fixed a bug with interacting with rolling pots in Queen's Mansion: they now fly away along with their Swatchling rather than disappear.
  • Fixed a bug where orange or green Swatchlings would copy incorrect text in battle.
  • Changed Alphys's classroom in Chapter 2 to match Chapter 1 in coloration.
  • Fixed a bug where using Noelle's IceShock on one enemy and sparing the other would cause the encounter to respawn, allowing grinding for infinite AT/Magic.
  • Fixed a bug where Spamton NEO's final attack would not correctly display "WRECK," "PAUSE," and "SPEW."
  • Fixed a bug where the flag for giving a gift in Cyber City was always reset to 1 (given to Ralsei). Added a Susie plushie and dialogue if it is given to her.
  • Added a smoke effect after Spamton NEO's final attack.
  • Holding X through the start of an attack no longer slows the SOUL, allowing it to be held constantly while remaining at full speed. Pressing C and Z during an attack plays a sound and toggles SOUL-slowing.
  • Corrupted save files by offsetting room IDs.
  • Miscellaneous bugfixes.
v1.09 (v1.05 on console) was released on February 24, 2022.
  • Restored all changes from v1.08 after its retraction.
  • Attempted a fix of the save-corrupting room ID bug; caused several other glitches.
  • Removed the SOUL-slowing toggle with C and Z.
  • Fix a bug where the Chapter 2 Bed Inspector title was unobtainable.
v1.10 (v1.06 on console) properly fixed the save file loading issues from v1.08 and v1.09[11] on February 25, 2022.
v1.12 was available as a Steam beta on April 10, 2022.[12] It contained several bugfixes for the save system and running on Windows 7.
  • Fixed the game running on Windows 7.
  • Further changed the room system to better distinguish between chapters.
  • Fixed a bug where the game would switch to fullscreen on the chapter selection.
  • The cheese maze no longer appears after aborting the Snowgrave Route, making it impossible to use SnowGrave on normal enemies.
  • Fixed a softlock when Ralsei tries to ACT on a Maus as it is Upgraded.
  • Fixed a visual bug with GIGA Queen's speech before her battle.
  • GIGA Queen can no longer reuse her fire breath attack in place of her final attack.
  • Fixed a glitch where it was possible to walk out of bounds near the roller coaster cutscene.
  • Game volume is now consistently initialized as 60% of maximum, rather than 100% in Chapter 1.
  • The music now stops after Queen's dialogue if she was violently defeated.
v1.13 was available as a Steam beta on April 12, 2022.[13] It contained more minor bugfixes, especially for the new room ID system.
v1.14 was available as a Steam beta starting April 14, 2022. It contained more minor bugfixes, updating Chapter 1's loading system with the new IDs.
v1.15 is available as a Steam beta since June 6, 2022.[14] It contained several minor bugfixes.
  • Berdly's weapon is drawn more consistently.
  • Fixed a bug where the cheese maze would immediately disappear if the Snowgrave Route was started and ignored, but only aborted during the maze.
  • Fixed a bug where heightened invincibility frames could be retained from the King battle.
  • Fixed a rendering bug against GIGA Queen.
  • Fixed a rendering bug with a tile in Cyber City.

PlayStation 4/Nintendo Switch[]

Deltarune Chapter 2 was released as a free update to Chapter 1 on PlayStation 4[15] and Nintendo Switch[16] on September 23, 2021. While its v1.00 release predates the PC v1.00 due to testing requirements, later versions were synchronized with different version numbers.


  1. - @UnderTale on Twitter, October 31, 2018.
  2. DELTARUNE Chapter 1 is now available to download for free on Nintendo Switch and PlayStation 4! Feel free to check it out! - @UnderTale on Twitter, March 01, 2019.
  3. THE SECOND FIELD. THE SECOND CONNECTION. - @UnderTale on Twitter, September 18, 2021.
  4. We've updated DELTARUNE! Please check Steam or redownload the game if you got it on itch. This should fix all of the crashes happening due to controller issues. Thanks for your patience. - @UnderTale on Twitter, September 18, 2021.
  5. DELTARUNE was updated again today (9/19/21) to fix various crashes and softlocks. Please update the game on Steam re-download it on itch if you've been having any issues. List of fixes attached. - @UnderTale on Twitter, September 19, 2021.
  6. DELTARUNE Chapter 1&2 have been updated to 1.0.5 to fix various issues. Please update the game on Steam or re-download it on itch if you like. Changes attached. This mainly makes it easier to play the game after getting a Game Over. - @UnderTale on Twitter, September 21, 2021.
  7. DELTARUNE Chapter 1&2 has been updated to version 1.06 to make a few minor adjustments and bugfixes. - @UnderTale on Twitter, September 23, 2021.
  8. DELTARUNE Chapter 1&2 has been updated on PC, Mac and PS4 to make a few minor adjustments and bugfixes. This same patch has been submitted to Nintendo and will be available on Switch once it's approved. - @UnderTale on Twitter, September 30, 2021.
  9. DELTARUNE Chapter 1&2 has been updated on PC, Mac, PS4 and Nintendo Switch to make a few minor adjustments and bugfixes. - @UnderTale on Twitter, February 22, 2022. Archived on February 22, 2022.
  10. Hey guys, we tried to update DELTARUNE on console, but it ended up making prior Chapter 2 save files load in the wrong place, or not at all. Working on a fix now, but it may take a while for the update to go through on Switch. Sorry for any inconvenience. - @UnderTale on Twitter, February 22, 2022.
  11. DELTARUNE Chapter 1&2 was updated to 1.10 (PC/Mac) and 1.06 (PS4 & Nintendo Switch). This only fixes an issue where loading an old save or getting a game over would sometimes not work on versions 1.08 and 1.09. Sorry for any trouble this might have caused. - @UnderTale on Twitter, February 28, 2022.
  12. Hey! We pushed a DELTARUNE Chapter 1&2 patch to a Steam Beta Branch to address a Windows 7 compatibility issue, macOS compatibility on Steam, and we've changed the way saves work to increase compatibility. We'd appreciate it if any Win7 and macOS users would take it for a spin. - @thatsmytrunks on Twitter, April 12, 2022.
  13. Heads up y'all, we've uploaded another build of DELTARUNE Chapter 1&2 that fixes a bug with save files between 1.07 and the current version. Please continue to use #DeltaruneBugs to report any issues you find. Thank you all so much! - @thatsmytrunks on Twitter, April 12, 2022.
  14. An update to the Deltarune Chapter 1&2 Steam Beta Branch has been pushed. Please use #DeltaruneBugs to report any issues! - @thatsmytrunks on Twitter, June 06, 2022.
  15. Surprise! Deltarune Chapter 1&2 is also available on PS4 as a free update to Chapter 1! Get it here: - @UnderTale on Twitter, September 23, 2021.
  16. Nintendo Switch owners: DELTARUNE Chapter 1 has been updated to become DELTARUNE Chapter 1&2! Please enjoy! (And if you haven't gotten it yet -- it's free!) - @UnderTale on Twitter, September 23, 2021.