Undertale Yellow: Shine and Sparks

This project is directed by:
@MrMas0n , @K_Dev , and Team!SnS.

The mod was created using UndertaleModTool.

If you're interested, consider following us on these platforms!
Discord | Bluesky | SoundCloud | Reddit | YouTube

Undertale Yellow: Shine And Sparks is an Undertale Yellow™ mod that hopes to retell the story of the Yellow SOUL, fresh and filled with tons of changes and additions for a fully reimagined experience.

With a complete visual overhaul, on top of adding back in unused content from Undertale, new secrets, new features, attention to detail changes and more, all designed to be canon-compliant, there's plenty to revisit and do.

Being based on the Nintendo Switch & XBOX versions of Undertale, this mod also adds in the exclusive content from there, such as borders and all that!

Experience a new take on the beloved 1 year old game with one of the most ambitious Undertale Yellow™ mods out there, and we hope you stay tuned for more updates!

This mod is NOT complete. We're just starting at the Dark Ruins so far.

Page screenshots may not always accurately depict the content in the mod, but instead it's most up-to-date development version.

Any assets from Undertale™ and Deltarune™, as well as the games themselves, are by Toby Fox & Co. Any assets from Undertale Yellow™ and the game themselves are by Team Undertale Yellow.

This guide exists to aid you during the installation process and hopefully answer and questions you may have.

The guide includes 3 essential sections documenting everything you need to know.

A) Preface

• This mod was designed to work for the latest version of Undertale Yellow.
  The mod will not work on old versions of the game.

• SnS is currently not playable.
  This obviously means it will be prone to bugs and errors when it releases.

• This mod is incompatible with other mods, including language mods.
  Unless those mods were design to work with SnS or perhaps distributed as scripts for UndertaleModTool, they will just result in errors.

• Save files for the mod are stored in a different folder called UNDERTALESNS, in the same directory as the original UNDERTALE YELLOW folder.
  Normal save files and SnS save files are only compatible to some extent.

• By downloading this mod, you agree not to re-use any assets from it for your projects without asking for our permission first. (BUT, we are very flexible about it, so if you are able to reach us, go ahead!)
  You are allowed to base your sprites on SnS ones! Just make sure they're altered at least a little bit!

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B) Instructions

1. Find the folder where Undertale Yellow is installed.
   [BE SURE TO CREATE A BACKUP OF THE UNDERTALE YELLOW FOLDER BEFORE PROCEEDING TO THE NEXT STEP]

2. Extract the files from the mod download into the Undertale Yellow folder and replace all files - Put every file in there, including the .ogg files and such, and select Replace the files in the destination if prompted.
   (Note: There's an extra folder with optional remixes of some of the original tracks. If you want, you can add those too for the full experience!)

3. Use DeltaPatcher to patch the data.win file with the SnS patch - Once all the files and folders are moved into place, you should see a DeltaPatcher folder in the Undertale folder. Open it and launch DeltaPatcherLite.
   In the Original file: section, click on the folder and and select the data.win  (or just data) file of Undertale Yellow.
   In the XDelta patch: section, select the .xdelta file.
   After that, click on the Apply patch button, and watch it go!
   [For any errors that may occur during this process, consult section C) of the guide.]

4. Launch the mod - Click on UNDERTALEYELLOW.exe.
   [For any errors that may occur while launching the game, again, consult section C) of the guide.]
   
   And now you too can enjoy Undertale Yellow: Shine and Sparks! If you want to give suggestions for further updates or report bugs, consider checking our Discord server, where you can also see sneak peaks for future updates!

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C) Troubleshooting

• "An error has occurred: xdelta3: source file too short: XD3_INVALID_INPUT." - There are a few reasons you're getting this error,
  Please verify your file or reinstall Undertale. Also make sure no other mods are installed, as small as they might be. It should work after.

• A file explorer window opens when you open the EXE - Make sure the EXE is in the same folder as the data.win .
  Also make sure the data.win is called "data.win" (or "data" as a .win type file if you don’t have file extensions showing).

• Loading screen never ends - Check the title of the window. It should read "Undertale" or some variation of it.
  If it says "Made in GameMaker: Studio 2" or similar, please reapply the patch. If the issue persists, see the previous tip.
  If not, be patient, as Shine and Sparks is a fairly large mod.

• You get a "Select File" window when running the mod - All of the files need to be in the same folder as the mod's EXE, so make sure they are.

• The game resolution looks small in fullscreen - This may be happening because your screen resolution is not a perfect 16:9 ratio resolution.
  The preferred resolution for playing SnS is 1920x1080.

• Directors

  • Mr. Mason / @MrMas0n (Owner)

  • K_Dev / @K_Dev (Co-Owner)

• Writers

  • K_Dev / @K_Dev

  • Astral

  • Mr. Mason / @MrMas0n

• Spriters/Artists

  • Tessa / Nameless Child

  • Nyx the Cat

  • Shade_Weaver / @Shade_Weaver

• Musicians

  • Mat / @Msgz95

• Programmers

  • Mr. Mason / @MrMas0n

  • Radicalcube / @Radicalcube (Sometimes)

• Additional Credits

  • Gage / @GageIman (Game Tester)

  • Homeless Tree / @HomelessTree (Partial Time)

  • Соня / @cute_fenya (Makes Some Art For Us)

Here's some shout-outs to other projects and groups affiliated with the mod.

(Disclaimer: Team!SnS is in no way directly associated with these projects, and whatever conflicts may occur we are not liable for unless we are directly involved.)

  https://www.moddb.com/mods/na2…

  https://reddit.com/r/Undermine…

  https://underevent.github.io/

  https://gamejolt.com/games/UTY…

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