How to Install Any Undertale/Deltarune Mod in Minutes! [2023+]

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  • Опубліковано 14 бер 2023
  • A lot of people ask me how to install the mods for Undertale and Deltarune I use in my videos, so I decided to make a tutorial for you guys! I know it isn't the typical content for this channel, but thought I'd make a bonus video for all you guys who need it :)
    Deltapatcher: www.romhacking.net/utilities/...
    Mods Used in this Video:
    Deltarune Unhealthy Edition by AcousticJamm: gamebanana.com/mods/download/...
    Undertale with a Gaster Blaster by BlueSheep3: gamebanana.com/mods/428457
    ----------------------------------------------------
    if you like Undertale then you just have to subscribe (i don't make the rules sorry)
    Discord: / discord
    ----------------------------------------------------
    Edited by Markn: / @markn6296
  • Ігри

КОМЕНТАРІ • 705

  • @egochka11
    @egochka11 Рік тому +73

    Just a small note: some mods might replace music or other files, for those, just replace the files in the program folder.

  • @MustaDevOld
    @MustaDevOld Рік тому +141

    For how huge the modding community of both games are, I'm quite surprised there aren't any mod managing programs.

    • @Julnz
      @Julnz Рік тому +4

      Unitale and CYF/CYK are both fan games that most modders use

    • @MustaDevOld
      @MustaDevOld Рік тому +8

      @@Julnz That's correct! CYF/CYK are fine tools, and they do have big modders. but the main game's modding is still at its peak.
      Those tools require a completely different way of using them. Last I check (which is long so correct me if I make a mistake) to get the overworld you need to get the game files on Unity and edit them. While modding the base game is not only faster given the UndertaleModTool, but also easier because game maker studio is easy to use.
      Sorry for the long one

    • @ijgames4529
      @ijgames4529 8 місяців тому

      Can someone tell me how I can mod my switch to download Undertale together?

    • @BonginkosiDlamini-xs2lv
      @BonginkosiDlamini-xs2lv 7 місяців тому

      that feels so Ai generated@@MustaDevOld cuz of the puncutuation and it just sound Ai generated

    • @randomgamer3946
      @randomgamer3946 2 місяці тому

      @@ijgames4529 probably impossible to mod undertale on a switch

  • @sogmeister
    @sogmeister Рік тому +91

    Do NOT forget to make a copy of all the UNDERTALE/DELTARUNE folders to use all your mods on separately, it's better off to play the mods on a copy than to use a copy as a backup.

    • @sogmeister
      @sogmeister Рік тому +1

      @Otame No

    • @FrostyHub246_17
      @FrostyHub246_17 Рік тому

      im kinda late to this comment but im trying to install a deltarune mod and i dont know how to copy the folders do you know how? .w.

    • @sogmeister
      @sogmeister Рік тому +1

      @@FrostyHub246_17 just use your mouse and highlight all the files in the folder, right click, and select copy, and then you can paste it anywhere else

    • @FrostyHub246_17
      @FrostyHub246_17 Рік тому

      @@sogmeister i copy and pasted the files, now im trying to download the mod but it doesnt seem to be working... im kinda worried i'm gonna mess something up.

    • @sogmeister
      @sogmeister Рік тому

      @@FrostyHub246_17 It’ll probably be more helpful to watch a video, i’m not an expert on this stuff, sorry

  • @bebu0815
    @bebu0815 Місяць тому +4

    0:00 Introduction/finding data.win
    1:31 Installing data.win based mods
    2:10 Installing .xdelta based mods
    3:20 Outro

  • @diamonsword2297
    @diamonsword2297 Рік тому +37

    FINALLY A GOOD AND CLEAR TUTORIAL ABOUT MODS OF UNDERTALE AND DELTATUNE

  • @medicinalmercury
    @medicinalmercury 5 місяців тому +1

    THANK YOU THANK YOU THANK YOU YOU ARE AMAZING!!!!! I WAS STRUGGLING AND COULDNT FIND A SINGLE TUTORIAL BUT YOU SAVED ME! THANK YOU!!!!

  • @Lapis_Pylosiphorum
    @Lapis_Pylosiphorum Рік тому +8

    Great tutorial MysticSlime
    I’m already subbed & already know however it’s great for more player to be able to experience games they love in a new way
    Was gonna make a tutorial myself but at this point if anyone ask me how to mod the game I’m a refer em to your channel

    • @StrittandThe411
      @StrittandThe411 Рік тому +1

      I saw your other comment right next to this one

  • @TempoMonstrocity
    @TempoMonstrocity Рік тому +3

    Thanks I actually needed this

  • @hgsamvxhf
    @hgsamvxhf Рік тому

    Congratulaions MysticSlime ! You now have 100k subscribers !

  • @alexandersvibing7777
    @alexandersvibing7777 Рік тому +10

    Thank you so much, I really needed this. This worked so well I am so happy right now!

  • @henrygibran3528
    @henrygibran3528 11 місяців тому +3

    Thank you, this really helped alot

  • @thesquidi144
    @thesquidi144 Рік тому +1

    Thanks for the tutorial 👍

  • @flaminsx
    @flaminsx Місяць тому

    I'm having so much fun with the gaster blaster tysm

  • @mythmage8231
    @mythmage8231 7 місяців тому

    Thank you so much, you absolute legend

  • @bloxxer717
    @bloxxer717 Рік тому +7

    Hey man that’s pretty cool
    (I play on switch)

  • @dwerical
    @dwerical Рік тому +1

    Really helpful

  • @eiadithecoder620
    @eiadithecoder620 2 місяці тому +1

    also dont forget, this does not only work for undertale and deltarune, but it also works on most games using the game maker engine for example: pizza tower

  • @Watermeloncatishungry
    @Watermeloncatishungry 7 місяців тому

    Tysm for the help now I got the gaster blaster mod

  • @LetStormyCook
    @LetStormyCook Рік тому +4

    hey!, this is a really helpful videos for other people but what if i want to install mods on undertale and deltarune on MacOS?

  • @T_Dude
    @T_Dude Рік тому +4

    That’s pretty cool, thanks. What about restoring the games to normal after you’re finished?

    • @MatthewMorris6148
      @MatthewMorris6148 Рік тому +2

      I’d suggest making a backup of the original data file and replacing the modded file with the backup.
      Edit: Or if you don’t care about keeping old saves then delete and reinstall the game.

    • @T_Dude
      @T_Dude Рік тому

      Aight, thanks.

    • @jackybugjambajuice6538
      @jackybugjambajuice6538 Рік тому

      @@MatthewMorris6148 ill try it

    • @MyBedIsInAWall
      @MyBedIsInAWall Рік тому +3

      If you are using steam then right click the game and go properties, then click verify and it will re-download the changed or missing files.

  • @bocajthewizard
    @bocajthewizard Рік тому +3

    if this works you are a legend, i have spent so long trying this. ( i will edit when find if it works)
    also please do a way to install ( not steam ) undertale bits and pieces ,that would be rlly helpful

    • @EnoEso
      @EnoEso Рік тому +1

      i checked the page for undertale bits and pieces and it requires that you have the steam version of undertale, if you only have an unlicensed copy or the console versions then it won't work

    • @bocajthewizard
      @bocajthewizard Рік тому +1

      @@EnoEso alr thanks, that sucks for me but thanks for telling me

    • @DivineBeingOfJustice
      @DivineBeingOfJustice 24 дні тому

      @@EnoEso me when i delete every mention of steam from my game copy so that bits and pieces works with my pirated copy and it works

  • @elstarnor4628
    @elstarnor4628 2 місяці тому +4

    Just downloaded Undertale Red & Yellow, thank you so much for this tutorial! /gen

    • @maguthehatguy
      @maguthehatguy Місяць тому +1

      when i tried it just said
      An error has occurred: xdelta3: source file too short: XD3_INVALID_INPUT
      idk how to fix it

    • @caseyhust6186
      @caseyhust6186 Місяць тому

      @@maguthehatguy same issue here it sucks

    • @fdz6
      @fdz6 28 днів тому

      @@maguthehatguy same but mine says: An error has occurred: xdelta3: target window checksum mismatch: XD3_INVALID_INPUT

  • @hellotakes12
    @hellotakes12 Рік тому

    hey im early! also thanks for the tutorial

  • @theunfunnyman801
    @theunfunnyman801 Рік тому

    Finally gonna be able to download the super smashing fighters mod.
    Can't wait to play as topher, wojcicki and michael jackson.

  • @xenovers_1111
    @xenovers_1111 11 місяців тому +25

    Now how to remove the mod

    • @tuxsteve1
      @tuxsteve1 2 місяці тому +4

      Probably delete the game reinstall it without mods

    • @JhaydenPlayzz
      @JhaydenPlayzz 2 місяці тому +5

      ​@@tuxsteve1and flowey was happy becouse all the savefile has been erased

    • @jpvera3042
      @jpvera3042 14 днів тому +1

      Don’t remove the file and just keep it somwhere else

    • @Video_Montage15
      @Video_Montage15 День тому +1

      ​@@jpvera3042 but in the case of xdelta files, what will we do ?

    • @Video_Montage15
      @Video_Montage15 День тому +1

      I think I should just create backups 😅

  • @dendyxyz
    @dendyxyz Рік тому +52

    MYSTICAL SLIME your videos are so inspiring, i showed me wheelchair bound little brother and he legit got up and id a flip to his alienware logitech computer to download suzie no shoes mod, thank you miracle worker mystical shlime man

    • @zek1405
      @zek1405 Рік тому +5

      schitzo post

    • @_Toewastaken
      @_Toewastaken Рік тому +5

      Susie no feet 😭💀

    • @mertensiam3384
      @mertensiam3384 Рік тому +3

      Susie... Susie what now

    • @bocajthewizard
      @bocajthewizard Рік тому

      susie no shoe mod. your brother uncrippled to see susie without shoes

    • @aperson6637
      @aperson6637 Рік тому +2

      That’s not actually a mod just no

      Read more

  • @ProEFB
    @ProEFB Рік тому +3

    NOTE:You can do the exact same things for pizza tower.

  • @sonicthelegend8741
    @sonicthelegend8741 Рік тому

    He's about to hit 100k

  • @Simeo905
    @Simeo905 Рік тому +1

    Deltarune question: in the ending cutscene in chapter 2 when kris throws the soul into the sink cupboard, are you able to move the soul like the ending of chapter 1?

    • @skyrise6566
      @skyrise6566 Рік тому

      no you can not but in chapter 1 yes

  • @gamergurl3648
    @gamergurl3648 4 місяці тому +1

    probably a bit late, but would it be possible to have more than one mod installed at a time? A friend and I wanna play multiplayer (Undertale Together) as well as Cible's undertale ai mod. Or would we have to just choose one or the other?

  • @gingerphoenix10
    @gingerphoenix10 Рік тому +1

    I already knew all this, but this is making me think.. what if you use an undertale patch on Deltarune, or the other way round 🤔

  • @UnknonRetad2546
    @UnknonRetad2546 Рік тому +2

    I couldn't apply the mod, It would say that "the source file was too short"

  • @CrimsonCheesecake
    @CrimsonCheesecake 5 місяців тому +2

    can you install the mods while you're already like half way into the game and will it still work?
    and how do you uninstall the mods after you're done with them?

  • @astroxenoyt7369
    @astroxenoyt7369 Рік тому

    Thanks bro wish I could sub more then once

  • @dendyxyz
    @dendyxyz Рік тому

    Thank you so much

  • @2lazytoedit
    @2lazytoedit Місяць тому

    Thanks👍

  • @crazyo6595
    @crazyo6595 7 місяців тому +2

    how do i instal bps. ?!?!??!?!

  • @setton619
    @setton619 10 місяців тому

    THANKU BRUVAA : DDD

  • @ghostygamerz4800
    @ghostygamerz4800 Рік тому +2

    Time for a alpha gamer move

  • @smash8192
    @smash8192 Рік тому +3

    For anyone who acedentaly ruined his game reinstal the game (without cloud data)and it should work again if not Tell me i will try to help

  • @Fire_Demon0
    @Fire_Demon0 Рік тому +1

    thanks for the tutorial but, can you make one for Mac please?

  • @CheesyLizzy
    @CheesyLizzy Рік тому +3

    How do you get your game back to normal after modding?
    I'm considering trying mods but I don't want Deltarune to accidentally still be changed when future chapters come out

    • @sibula377
      @sibula377 Рік тому +1

      i think copying the game files and use the mods on the copy should work out

    • @dagNslava
      @dagNslava 8 місяців тому +1

      U can't
      U need to make a copy of the game

  • @gabrielintano2202
    @gabrielintano2202 9 місяців тому +2

    what does An error has occurred: xdelta3: target window checksum mismatch: XD3_INVALID_INPUT mean?

  • @wojteq2274
    @wojteq2274 11 місяців тому

    tha game is tottaly "not crashing" and i can "normally play". the gaster blaster mod "works so well" after i did what you said.

  • @Shiro_Zark
    @Shiro_Zark Рік тому +1

    Then, are you able to add 2 mods together, like this: Undertale Bits and Pieces, but Chara chases you

    • @EnoEso
      @EnoEso Рік тому

      probably not, at least for most mods, since they most likely arent made to work together

  • @On_The_Hook888
    @On_The_Hook888 5 місяців тому +1

    what if in the xdelta files I get:An error has occurred: xdelta3: target window checksum mismatch: XD3_INVALID_INPUT?

  • @Boonetube27
    @Boonetube27 Рік тому +1

    How about resetting Undertale progress?

  • @roboboy_uk
    @roboboy_uk 2 місяці тому

    Thank you

  • @Galaxy-Univers
    @Galaxy-Univers 8 місяців тому +2

    How to do in mobile ?

  • @RandomDuck430
    @RandomDuck430 Рік тому +1

    Okay, cool. Now how do I remove it?

  • @abdalmajeedalmutairi1373
    @abdalmajeedalmutairi1373 Місяць тому

    nvm i just put the orginal data win in the delta patcher i made a copy and it works thanks

  • @theblackspotgaming4887
    @theblackspotgaming4887 19 днів тому +1

    Mine is now saying
    "Error to load. Unable to find function switch_controller_vibration_permitted"
    I got this when I did your video with undertale red and yellow mod now every time I open the game it just says that error and I can't play the game

  • @mango_fachero6987
    @mango_fachero6987 8 місяців тому +4

    [23:04:00] An error has occurred: xdelta3: target window checksum mismatch: XD3_INVALID_INPUT

    • @BoogieBootade
      @BoogieBootade 8 місяців тому +1

      SAME

    • @br0thought
      @br0thought 5 місяців тому +1

      disable the checksum button in the settings

    • @Capivara_Gamer2099
      @Capivara_Gamer2099 Місяць тому

      @@br0thought i click in this button and apeears: source file too short

  • @LoyaLPikmin
    @LoyaLPikmin Рік тому

    Where is the most brutal Kirby challenge part 2

  • @terx01
    @terx01 8 місяців тому +2

    Is it possible on MacOS?

  • @gbiel7385
    @gbiel7385 Рік тому +1

    i need to know one thing...
    WHERE DO I INSTALL GREEN SOUL MOD
    (srsly i searched everywhere and couldnt find, that would help me alot)

  • @Pjo-Super-Fan
    @Pjo-Super-Fan 7 місяців тому

    Can you do a tutorial on how to make mods please

  • @kalanimuncan9807
    @kalanimuncan9807 2 місяці тому

    THX!

  • @RockTheSecond
    @RockTheSecond 10 місяців тому

    Uh.. i tried to download undertale orange but i wasnt able to use the deltapatcher or whatever its called. Then when i tried to open undertale it was just the very first thing, The icon. Then i was like "did i f*ck up undertale!?" luckily through some epic file changing and stuff i was able to fix it. Me not being able to fix it woulda sucked, especially cause i have a undertale series on my channel going on. But at the same time i really wanna play with the orange soul.

  • @andrewdevirgilio3077
    @andrewdevirgilio3077 11 місяців тому +1

    Does it work the same for zip files or no?

  • @randomguyspaceflight64
    @randomguyspaceflight64 11 місяців тому +1

    "xdelta3: target window checksum mismatch: XD3_INVALID_INPUT" I NEED A TUTORIAL FOR THIS

    • @JoeAndy-rs4ok
      @JoeAndy-rs4ok 11 місяців тому +1

      SO DO I HOW THE FUCK DO I FIX THIS I TRIED EVERYTHING

  • @Slimeyalt
    @Slimeyalt 10 місяців тому

    Can you make a tutorial on how to install things/play things on the kristal mod menu (because I want to play the deltarune god home mod but I cant because I know how to download/play mods on kristal)

    • @Slimeyalt
      @Slimeyalt 10 місяців тому

      can someone help me?????? I already asked people on the kristal discord server and i dont understand what to do

  • @Used-To-Be-RedModd
    @Used-To-Be-RedModd Рік тому +2

    I keep getting an error saying An error has occurred: xdelta3: target window checksum mismatch: XD3_INVALID_INPUT can anyone help me?

  • @azurepyro9832
    @azurepyro9832 Рік тому +3

    What are some ways to return back to the unmodded game?

    • @YourLocalHazbinEnjoyer
      @YourLocalHazbinEnjoyer Рік тому

      I know.
      1. Run the deltapatcher program and click on the arrows.
      2. original file: data win. Modified (the mod you already have) xDelta patch: the new mod
      Your welcome

    • @YourLocalHazbinEnjoyer
      @YourLocalHazbinEnjoyer Рік тому

      I frick i thought you asked how to change the mod

    • @YourLocalHazbinEnjoyer
      @YourLocalHazbinEnjoyer Рік тому

      I also explained it wrong🫠

  • @c_xber
    @c_xber Рік тому +2

    hm, i followed the exact same steps to get the gasterblaster mod
    it says that an error occured.
    any help?

  • @Emvixity..
    @Emvixity.. 6 місяців тому +1

    how do you remove mods-

  • @PixelatedWasStolen
    @PixelatedWasStolen Рік тому +2

    thanks alot, you just completely broke both my undertale and deltarune

    • @KaynoissaWReacts
      @KaynoissaWReacts Рік тому

      @dr.strange same

    • @micy_yt3449
      @micy_yt3449 11 місяців тому +2

      That's why you should always backup before adding a mod into your game.

  • @dubeeisbsishawijsbcisnnaiw4433
    @dubeeisbsishawijsbcisnnaiw4433 10 місяців тому +1

    My mod doesn't come as a file. My mod is a large folder with many folders inside. How do I put it into the game?

  • @themattincharge
    @themattincharge Рік тому

    this applys for other xdelta mods like pizza tower!

  • @Papyrus657
    @Papyrus657 8 місяців тому +2

    How do you remove a mod if you used delta pacher

    • @user-zo1jz8ql6v
      @user-zo1jz8ql6v 7 днів тому

      YOU CAN DELETE UNDERTALE OR DELTARUN AND THEN INSTALLET AGAIN AND YOUR GAME DATA WILL BE SAVED WITHOUT THE MOD

  • @bretholien
    @bretholien 5 днів тому

    2:07 this is for the xdelta files for the people who need it

  • @Molotov449
    @Molotov449 Рік тому

    Mystical slime I thank you for this very clear explanation I was gonna quit but thanks to you my joirney is at the beginning of the end!!!

  • @WatermelonPiggy
    @WatermelonPiggy 6 місяців тому

    I tries the gaster blaster mod and it kept saying "ERROR" "ERROR" over and over again.

  • @dane_W
    @dane_W 5 місяців тому

    and now, how do i remove the gaster blaster mod?

  • @anacardoso1030
    @anacardoso1030 Рік тому +3

    how do you do with .rar files?

    • @avatarman7542
      @avatarman7542 9 місяців тому

      you can open .rar files in win rar is just like a .zip file

  • @tinacook8519
    @tinacook8519 Місяць тому +1

    Man I wish I could use the Nintendo switch and install mods:(

  • @Patrick20613
    @Patrick20613 Рік тому

    i cant play undertale now idk if i did something wrong

  • @Alastor_god
    @Alastor_god 10 місяців тому +1

    Can you make it for android please?

  • @HoiImTeMMiE
    @HoiImTeMMiE 5 місяців тому +1

    just a small note: I bought the game off gog and I have no idea how to install the mod

  • @lolurcool927
    @lolurcool927 2 місяці тому

    I have been trying for 23 days to try and hack Undertale and set my health to like 150 so i can beat the sans boss fight I have tried installing mods I have done legit everything in my power but all I have gotten so far is getting 8 butterscotch pies well I give up I am just going to work myself down to the bone until I beat sans.

  • @GavinPlayz69
    @GavinPlayz69 Рік тому +1

    when i click apply it gives me an error😭

  • @MEGAJUAN_13
    @MEGAJUAN_13 Рік тому +3

    Undertale Gaster Blaster: Anyone can help me, i put apply patch then say An error ocurref xdelta3: XD3_INVALID_INPUT

  • @BriefDiscussion
    @BriefDiscussion 2 місяці тому

    I can't find that blue running heart that says data anywhere, depsite owning the game on steam.

  • @sussy_pamcake87
    @sussy_pamcake87 5 місяців тому +1

    Me who plays undertale mobile:well shit.

  • @sansskeleton9668
    @sansskeleton9668 8 місяців тому

    I tried to use this so many times but it still does not work why

  • @Hacker101.
    @Hacker101. Рік тому

    how do i fix An error has occurred

  • @Dynamikesongtutorial1
    @Dynamikesongtutorial1 Рік тому

    I added the mod to the deltarune file and it didn’t work idk what I did wrong

  • @xenrub7780
    @xenrub7780 Рік тому

    when I click on the folder icon my deltapatcher just crashes

  • @EPQUSH
    @EPQUSH 8 місяців тому +1

    how do i get to use multiple mods at once?

    • @RavyNDoll
      @RavyNDoll 2 місяці тому

      i dont think you can sadly enough

  • @DylanfrankeFc
    @DylanfrankeFc 2 місяці тому

    I just get the undertale screen and nothing happens

  • @carrier2456
    @carrier2456 Рік тому +1

    Not helpful, no help on what to do if game doesnt run after I clicked "apply patch" on Delta Patcher. I disabled checksum validation. When I turned it on, it gives me an error.

  • @Barakon
    @Barakon Місяць тому +1

    I keep getting the access denied error, how do I fix it?!

  • @GuilherminoPlays
    @GuilherminoPlays Рік тому +5

    I never thought it would ever have a "How to install mods in Undertale/Deltarune" video, like it's REALLY simple, and almost all mods for Undertale/Deltarune have a tutorial of how to install it.
    That's a really useful video for some people, tho.

  • @rush6263
    @rush6263 9 місяців тому

    Great tutorial but for some reason it says an error has occurred. Please help me fix it.

  • @ChocupJajaja
    @ChocupJajaja 22 дні тому +1

    I can't install a mod on Deltarune and DeltaPatcher writes to me "An errot has occurred: xdelta3: target window checksum mismatch: XD3_INVALID_INPUT"
    What should I do with this?

  • @loIcat_f
    @loIcat_f Місяць тому

    when i enter the game it just crashes when i click enter???

  • @d1n0jl76
    @d1n0jl76 Рік тому

    What if you want to install multiple mods at the same time?

  • @VeeBoost
    @VeeBoost Місяць тому

    I did it and now it won't let me play deltarune what do i do

  • @kirbosgamegretto
    @kirbosgamegretto 7 місяців тому

    so the strange thing is im trying to bring back the twisted sword and deltapatcher says its working but when i boot up deltarune its not there beacause in the mod description it says that there will be three of them in my inventory but when i check they arent there...

  • @noyesstudios940
    @noyesstudios940 Рік тому

    Didnt work for me when i replaced the data.win file deltarune would not open