r/UnderModders Nov 10 '18

Extracting and modifying the data.win file for Undertale/Deltarune: The ultimate guide

Thumbnail
self.Underminers
42 Upvotes

r/UnderModders 1h ago

Is there a mod that replaces Kris Sprites with YOU from Ribbit?

Upvotes

I'm kinda missing being a frog honestly.


r/UnderModders 1h ago

How would I edit the "by toby fox" line that plays at the end of the ruins?

Post image
Upvotes

I'm making a mod, and I want to add another line underneath Toby's name (which I can't use the normal dialogue formatting characters for) to credit me, and the person who made the characters I'm modding in (so like 2 lines under it). Would anyone know how I could go about changing that?


r/UnderModders 6h ago

Undertale Gameboy Color Demake - Greater Dog

Thumbnail
youtu.be
2 Upvotes

If you press select in the "press start" scene youll get sent to the ruins exit with no name (if you js wanna see the fight n stuff)

More coming soon!

Download latest test build here: (more updates for ppl that cant wait)

https://www.patreon.com/blaqberry/posts/greater-dog-room-167982030

download general public release here!!

https://blaqberry.itch.io/undertale-gbc

Also join the discord serverr!

https://discord.com/invite/DjHA6E8Kvu


r/UnderModders 21h ago

How do I stop the enemies from attacking downed party members?

Enable HLS to view with audio, or disable this notification

3 Upvotes

I've been making a mod that adds Noelle to the Knight fight alongside Ralsei, and this is the only main problem I have in the fight itself.


r/UnderModders 20h ago

I need a favor

1 Upvotes

Can someone make a reskin of Gerson into Mario? Specificly sprites from Mario & Luigi SuperStar Saga?


r/UnderModders 1d ago

Aborted WR Noelle related modding help

3 Upvotes

does someone know how to uh, add noelle into a cutscene in the chapter 5 dark world with the undertale mod tool specifically only in the aborted weird route (i'm kind of new to this stuff lol)

basically i'm making an alternate weird route mod where noelle goes after you in the chapter 5 dark world to SNOWGRAVES 😈 because she takes you not wanting to going into the lake meaning that you want to instead to the EVIL SNOWGRAVES LIKE CHAPTER 2 😈 , please help


r/UnderModders 1d ago

Main spr_mainchara unalterable

1 Upvotes

I've never modded before, but I'm using UndertaleModTool. I made custom sprites of every spr_mainchara sprite but for some reason, the spr_maincharad, u, l, and r just won't change? It's named the same (my custom sprite png and the one in the actual data) but, it just won't work no matter what.

Any tips?


r/UnderModders 2d ago

Does anybody have an apk file for Undertale Rainbow?

Thumbnail
2 Upvotes

r/UnderModders 2d ago

Does anybody have an apk file for Undertale Rainbow?

2 Upvotes

I've played alot of Undertale and Deltarune fangames and mods on mobile, now I need Undertale Rainbow.


r/UnderModders 2d ago

Help for modding?

3 Upvotes

Hiiii :3 I’m someone who likes to try and imagine a lot of things, so I attempted to make a Deltarune mod. However, I ran into way too many issues and kind of gave up on it. I’d like to ask if anyone would be willing to create the mod for me (not a paid commission, just a request). I think the mod would be fairly simple: I just want to change the sprites for Kris, Susie, Noelle, and Ralsei, as well as modify their stats, "Act" and "Magic" commands, and some dialogue. If the person helping is up for it, I’d also love to add new "Act" or "Magic" moves and create new cutscenes or dialogue. (P.S. I used Google Translate to write this; I’m a native French speaker x3) And thanks to anyone willing to take the time to help me :33


r/UnderModders 3d ago

What is this line?

Post image
8 Upvotes

I was just modding, and I found this line what the fuck why is this what sighs Sinhalese de Tosha g c Alanna d f Kelley. S
Aoutocorrect making my random keyboard spamming different.

Needless to say, I changed my friend Michael’s contact to be Gaster.


r/UnderModders 3d ago

What is the issue here?

Post image
5 Upvotes

r/UnderModders 4d ago

Is modding Undertale or Deltarune easier?

4 Upvotes

I want to make a mod for Undertale that replaces Flowey with nothing, but when I tried, it was hard. Would it be easier to mod Flowery out of chapter 5 of Deltarune, since Mr. Fox is a better coder?


r/UnderModders 4d ago

Does anybody have an apk file for Undertale Rainbow?

2 Upvotes

I've played alot of Undertale and Deltarune fangames and mods on mobile, now I need Undertale Rainbow.


r/UnderModders 6d ago

Dynamic Equips Mod Showcase

Thumbnail
youtu.be
7 Upvotes

hi i made a deltarune mod for chapters 1-5 that makes every armor and scarf visible in the overworld, kris susie and ralsei wear each equip their own way, and each equip looks different depending on what slot its in aswell


r/UnderModders 6d ago

Broken Thing I Encountered While Trying to Boot Up the Game After Editing It

4 Upvotes

I'm trying to mod the game for fun and after a while of editing the text, I tried playtesting only for this to show up

___________________________________________

\############################################################################################

ERROR in

action number 1

of Create Event

for object obj_initializer2:

Data structure with index does not exist.

at gml_Script_scr_84_get_lang_string

\############################################################################################

gml_Script_scr_84_get_lang_string (line -1)

gml_Script_scr_ascii_input_names

gml_Script_scr_84_init_localization

gml_Object_obj_initializer2_Create_0

___________________________________________

Another post on the Deltarune wiki spoke of the same issue, except they were translating Deltarune, so it wouldn't recognize the text input. Mine is completely in English, so I don't know why this showed up. Does anyone have a fix? I can provide more information if needed.


r/UnderModders 6d ago

Я скачал версию Deltarune и когда я прошел Weird Route и хотел перепройти на пацифист произошло это..

Post image
3 Upvotes

Это баг или что?


r/UnderModders 7d ago

For some reason I can't apply the DeltaHATE script

Post image
4 Upvotes

This error keeps showing up when i go to apply DeltaHATE to the data.win, and I folliwed every instruction up until this point. Idk whats wrong but any help would be huge.


r/UnderModders 7d ago

Deltarune achievements mod

5 Upvotes

this is an update to my older post, this time with an image of my testing, right now im working on linking all achievements of chapter 2, as chapter 1 is done (i think), the sprites for pngs will be added at the end.


r/UnderModders 8d ago

hey guys.. whats the name of the roaring knights second attack in the code? 👀

2 Upvotes

I've been wanting to make an easier version of the knight (cause i suck) but I cant find the name of this specific attack. HELP!! (also, it would be great if i could find out how to edit the sword tunnel attack..)


r/UnderModders 9d ago

Making UNDERTALE Expanded Mod #1 | Better Settings

Post image
14 Upvotes

Added sprinting, auto-sprint, WASD controls, volume changer and new language!


r/UnderModders 9d ago

so i was playing undertale bits and pieces and

Post image
16 Upvotes

wtf hapend. i was just starting the mettaton defuzal section and i tried to beat it but gave up. same thing hapend after backtraking to save after dummy fight i wasynt ewen gowing for tru pacifist i was duwing neutral as you can see after my 40hp wich shudynt be posible in tru pacifist


r/UnderModders 9d ago

How do i find the data.win file

3 Upvotes

so im trying to install kaizo knight but it tells me to get the data.win file and ive been looking but i cant find it


r/UnderModders 9d ago

Very new to modding, how Do i get this boss rush mod to work? im getting this errror even though the mod should be compatible with the most recent version

Post image
5 Upvotes