Pokemon Scarlet and Violet mods

[Catnatic]

On 10/30/2025 at 7:50 PM, Catnatic said:

It has to be done with Trinity because you literally can not mod the newer Pokemon Switch games without them, especially Scarlet/Violet.

We could distribute mods that's already been packed with Trinity but it comes with the risk of compatibility issues with other mods or that other mods simply will not work, which can be easily fixed yourself by simply using Trinity to apply multiple mods. It's a mod launcher for crying out loud, it's not that complicated.

Trinity is very simple to use, it just comes with the annoyance of having to dump the RomFS of your copy of the game which takes up the space of your storage drive.

[HpMpAp]

On 6/25/2026 at 4:40 AM, lega407 said:

If it is possible, would it be standalone

It IS standalone. Every replacer from my main download post works both with the trinity and the standalone version, as stated there.

[HpMpAp]

On 6/19/2026 at 3:24 AM, Layle4123 said:

are the any nude  mods for the npc's ?

Unless something has changed in a new Blender Pokemon Switch model importer version, it is completely impossible to do it unless you want to pay for 3DStudio.

[JaHimeHisui]

You can't even install more than 1 mod on Scarlet/Violet so what's the point in all this? Trinity Mod Loader doesn't even work properly the same for the mod merger.

Sometimes mods work sometimes they don't, what a mess... can't even get support with it anywhere either.

I just want to have some mods installed alongside my randomizer and even that is a struggle, 1 body mod (chara without arc folder because that's how it has been uploaded), 1 randomizer with arc and world folder, and just doesn't work.

Edited July 10 by JaHimeHisui

[Catnatic]

7 hours ago, JaHimeHisui said:

You can't even install more than 1 mod on Scarlet/Violet so what's the point in all this? Trinity Mod Loader doesn't even work properly the same for the mod merger.

Yes you can.

You can literally see in my screenshot for my blushing mod that the female character is nude with the blushing, which the mod itself doesn't come with the nude model.

 

The mods have to be NOT standalone romfs folders, they have to be in raw assets ("chara" folder for model edits, "message" for text edits, etc.) that Trinity Mod Loader can work with. I know that tool sucks but it's the only way to mod the newer Pokemon games for Switch because Game Freak have encrypted all their assets in an 8 GB "data.trpfs" archive that needs to be patched to allow overriding custom assets. Trinity Mod Loader is that patcher, you have to use it.

[JaHimeHisui]

16 hours ago, Catnatic said:

Yes you can.

You can literally see in my screenshot for my blushing mod that the female character is nude with the blushing, which the mod itself doesn't come with the nude model.

 

The mods have to be NOT standalone romfs folders, they have to be in raw assets ("chara" folder for model edits, "message" for text edits, etc.) that Trinity Mod Loader can work with. I know that tool sucks but it's the only way to mod the newer Pokemon games for Switch because Game Freak have encrypted all their assets in an 8 GB "data.trpfs" archive that needs to be patched to allow overriding custom assets. Trinity Mod Loader is that patcher, you have to use it.

So things like the randomizer are just broken and don't work with the latest version of the game (v4) only with v3.x then I guess

I did get the mod working, but nothing else works in the game, things like the gardevoir mod that was posted here OR the gardevoir replacer on Nexus.

Hardly any mods work and it's annoying that we can't replace gardevoir or put the humanoid mod that HpMpAp made in the game and have it actually work, their nude mods work (but look like nude minors because all the body proportions were left the same) but their gardevoir one doesnt because it doesn't come with anything to make it work (arc with data.trpfs for example) and even the Nexus one which comes with the arc folder and pokemon folder inside Romfs doesn't work.

When I use Trinity all it does is make another data.trpfs inside an outer romfs folder so you end up with:

Romfs/
-Arc
-Romfs

Which again doesn't work. Tried that Mod Merger too and that doesn't work, tried moving the arc folder into the parallel romfs folder, doesn't work either.

Gardevoir mods (the boobs one and the satonodiamond one) both don't work just like the randomizer mod.

Edited July 11 by JaHimeHisui

[Catnatic]

11 hours ago, JaHimeHisui said:

So things like the randomizer are just broken and don't work with the latest version of the game (v4) only with v3.x then I guess

I did get the mod working, but nothing else works in the game, things like the gardevoir mod that was posted here OR the gardevoir replacer on Nexus.

Hardly any mods work and it's annoying that we can't replace gardevoir or put the humanoid mod that HpMpAp made in the game and have it actually work, their nude mods work (but look like nude minors because all the body proportions were left the same) but their gardevoir one doesnt because it doesn't come with anything to make it work (arc with data.trpfs for example) and even the Nexus one which comes with the arc folder and pokemon folder inside Romfs doesn't work.

When I use Trinity all it does is make another data.trpfs inside an outer romfs folder so you end up with:

Romfs/
-Arc
-Romfs

Which again doesn't work. Tried that Mod Merger too and that doesn't work, tried moving the arc folder into the parallel romfs folder, doesn't work either.

Gardevoir mods (the boobs one and the satonodiamond one) both don't work just like the randomizer mod.

RomFS means ROM File System. It's basically what Nintendo refers to the file directory/structure of their games in the Switch (and 3DS) format.

The way how Switch modding works is that the modded files and folders need to follow the exact same file structure as the game's directory so the game/emulator knows which certain files are to be overridden/replaced.

What you've described is that the installed mods are not following the file structure correctly so it technically ends up replacing something non-existent.

 

RomFS is supposed to be the root of the game's assets, there shouldn't be another "RomFS" folder inside it.

The reason why Trinity would produce a "romfs" folder in the output isn't because of Trinity itself, it's because of the zipped file you're trying to mod.

For example, when opening up my "Blushing Face.zip", there should only be two things: "chara" folder and "info.toml" (the latter is optional).

If you open the zipped mod you're trying to load and it shows "romfs" instead, that's not correct.

However, some mods here are delivered as "standalone" versions which in this thread means that these mods have already been installed with Trinity so you don't need Trinity to use them, you could just plop their "romfs" into the game's mod folder like this:

Alternatively, the "romfs" folder can be inside a folder named something like "Dynamic FPS Violet" which is useful for toggling certain mods.

Otherwise, if it's just "romfs" in the mod folder, it will appear as "Atmosphere: [game title]" or the game's ID instead.

But because this game encrypts its assets differently than Pokemon Let's Go Pikachu/Eevee, Sword & Shield, and Legends: Arceus, you have to use a separate mod loader instead for toggling mods. And "standalone" mods for this game comes with the downside of not loading other mods because those other mods need to be installed as well with Trinity. If you want to use multiple mods, you have to use the "trinity" version of them, not "standalone".

 

A "trinity" version means the mod doesn't have its own "romfs" folder, it's only raw assets and folders that follow the game's file structure.

These 'raw' folders would be things like "chara" for character models/textures, "message" for text, etc.

Otherwise, you could probably just drag the "chara" folder from a "standalone" mod's romfs and put it in the right place.

Perhaps you could put that "chara" folder in a zip file and add that with Trinity. Again, look at my Blushing Face mod above as an example of what should be in a zipped file.

 

After applying the mods with Trinity, this is what the "RomFS" folder in the game's mod folder should contain:

There should be the "arc" folder alongside any other folder that matches the game's original (RomFS) file structure:

[JaHimeHisui]

6 hours ago, Catnatic said:

RomFS means ROM File System. It's basically what Nintendo refers to the file directory/structure of their games in the Switch (and 3DS) format.

The way how Switch modding works is that the modded files and folders need to follow the exact same file structure as the game's directory so the game/emulator knows which certain files are to be overridden/replaced.

What you've described is that the installed mods are not following the file structure correctly so it technically ends up replacing something non-existent.

 

RomFS is supposed to be the root of the game's assets, there shouldn't be another "RomFS" folder inside it.

The reason why Trinity would produce a "romfs" folder in the output isn't because of Trinity itself, it's because of the zipped file you're trying to mod.

For example, when opening up my "Blushing Face.zip", there should only be two things: "chara" folder and "info.toml" (the latter is optional).

If you open the zipped mod you're trying to load and it shows "romfs" instead, that's not correct.

However, some mods here are delivered as "standalone" versions which in this thread means that these mods have already been installed with Trinity so you don't need Trinity to use them, you could just plop their "romfs" into the game's mod folder like this:

Alternatively, the "romfs" folder can be inside a folder named something like "Dynamic FPS Violet" which is useful for toggling certain mods.

Otherwise, if it's just "romfs" in the mod folder, it will appear as "Atmosphere: [game title]" or the game's ID instead.

But because this game encrypts its assets differently than Pokemon Let's Go Pikachu/Eevee, Sword & Shield, and Legends: Arceus, you have to use a separate mod loader instead for toggling mods. And "standalone" mods for this game comes with the downside of not loading other mods because those other mods need to be installed as well with Trinity. If you want to use multiple mods, you have to use the "trinity" version of them, not "standalone".

 

A "trinity" version means the mod doesn't have its own "romfs" folder, it's only raw assets and folders that follow the game's file structure.

These 'raw' folders would be things like "chara" for character models/textures, "message" for text, etc.

Otherwise, you could probably just drag the "chara" folder from a "standalone" mod's romfs and put it in the right place.

Perhaps you could put that "chara" folder in a zip file and add that with Trinity. Again, look at my Blushing Face mod above as an example of what should be in a zipped file.

 

After applying the mods with Trinity, this is what the "RomFS" folder in the game's mod folder should contain:

There should be the "arc" folder alongside any other folder that matches the game's original (RomFS) file structure:

None of this really answered the issue since I pointed out the gardevoir mod in this very topic and the gardevoir mod on nexus, both not working with both having different structuring. See for yourself...

Appreciate the explanation but it seems that the pokemon mods and randomizer mods that affect the world just arent working, i've done everything possible to try to make it work. There's no discord or anything so I can't even show what's happening, everything you suggested down to putting stuff back in a zip file and attempting to get trinity to fix them just doesn't work, likely because of that pop up saying it's a modified data.trpfs since I guess no mods come with the standard one

Edit - I'll try re-zipping them for the 100000th time and put them back into Trinity, I've also extracted my default data.trpfs in ryujinx and I'll see if that makes a difference..

Edited July 12 by JaHimeHisui

[Catnatic]

20 minutes ago, JaHimeHisui said:

None of this really answered the issue since I pointed out the gardevoir mod in this very topic and the gardevoir mod on nexus, both not working with both having different structuring. See for yourself...

There's nothing unusual with the structuring there. Although the Nexus one has the assets in its own "romfs" folder, it's otherwise the same.

I literally provided a screenshot of the game's original RomFS that shows there is a "pokemon" folder in the directory.

And just for extra good measure, I'll provide even more screenshots that shows this Gardevoir mod is matching the game's file structure (its original RomFS):

(This .bat file is rather sketchy though, there's no such file in the original game's assets.)

 

I should point out though that if you're installing a mod with Trinity, that mod should not have an "arc" folder with data.trpfs inside it. 

That data.trpfs file is something that gets produced in the output after installing a mod with Trinity, so it's probably not a good idea to include that to install a mod.

50 minutes ago, JaHimeHisui said:

likely because of that pop up saying it's a modified data.trpfs since I guess no mods come with the standard one

Are you referring to this?

When setting/opening the file descriptor for Trinity, you're supposed to be using the original version of data.trpfd by dumping the game's RomFS.

[JaHimeHisui]

5 hours ago, Catnatic said:

There's nothing unusual with the structuring there. Although the Nexus one has the assets in its own "romfs" folder, it's otherwise the same.

I literally provided a screenshot of the game's original RomFS that shows there is a "pokemon" folder in the directory.

And just for extra good measure, I'll provide even more screenshots that shows this Gardevoir mod is matching the game's file structure (its original RomFS):

(This .bat file is rather sketchy though, there's no such file in the original game's assets.)

 

I should point out though that if you're installing a mod with Trinity, that mod should not have an "arc" folder with data.trpfs inside it. 

That data.trpfs file is something that gets produced in the output after installing a mod with Trinity, so it's probably not a good idea to include that to install a mod.

Are you referring to this?

When setting/opening the file descriptor for Trinity, you're supposed to be using the original version of data.trpfd by dumping the game's RomFS.

Okay, so just ignore the arcs the mods come with and re-zip them merge in Trinity. But when I do that I get no hands and legs xD I also don't think exefs can be merged or shouldn't be merged since when including the 60 fps mod it stops it working, only 30fps now

Using the base standalone, summer and autumn, and no backpack

Spoiler

I at least got the randomizer working this time so your advice on the folder structure has helped along with using the extracted data.trpfblabla

 

EDIT - Solved with this load order, it seems the randomizer has to go first, no idea why

Thank you Cat for help with folder structures and which to put into the mod loader 😄

Would be cool to get a larger version of gardevoir and main character, they're both so flat chested they need to be more matured and full grown so they dont just look like naked minors as seen above ;-; I had thought the summer 1.2 large would solve this but it doesn't come anywhere close

Edited July 12 by JaHimeHisui