How to Install Any Undertale/Deltarune Mod in Minutes! [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 :)

Mods Used in this Video:
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if you like Undertale then you just have to subscribe (i don't make the rules sorry)

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[MustaDevOld]

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

[egochka]

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

[diamonsword]

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

[sogmeister]

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.

[bebu]

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

[elstarnor]

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

[whoneedsahandlesmh]

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

[Lapis_Pylosiphorum]

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

[eiadithecoder]

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

[bloxxer]

Hey man that’s pretty cool



(I play on switch)

[logankitchener]

I am so happy i found a tutorial. thanks alot man!

[dendyxyz]

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

[fareclipsinq]

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

[hgsamvxhf]

Congratulaions MysticSlime ! You now have 100k subscribers !

[theblackspotgaming]

Mine is now saying

"Error to load. Unable to find function
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

[mythmage]

Thank you so much, you absolute legend

[bocajthewizard]

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

[girlbossvoddump]

Thank you! I got a mod tool side quest and was so confused

[Windystorm_GT_is_him]

Tysm for the help now I got the gaster blaster mod

[T_Dude]

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