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Umamusume: Pretty Derby (Steam)


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Posted
On 1/3/2026 at 5:07 PM, tacosnap123 said:

what are the chaces of drag in drop mods being a thing for uma or is that impossivle for this game

you have to encrypt first

also i updated Mod Loader support steam JP and NO! I WILL NEVER MOD ON JP

2026_01_04_18_03_02_0_tr.png

2026_01_04_18_03_21_0_tr.png

Posted

Anyone can help me to solve the errors while starting the UMPD?

 

*Note : - UmaDecryptor.exe ver1.2.0 and lastest UMPD from gamebanana


image.png.ff0c8c7729e7894b66436586f2886b37.png

Posted (edited)
16 hours ago, goofyahhcats said:

 

Thnx it works, but there're another problems, so could it be place the UMPD inside the Cygames locallow first? (global version btw)
Or maybe should it be another way to detect cygames folder like manually edit the folder address in py or json?

image.png.e1225ad7300df19adf675237dbb99387.png

Edited by GreyGZ
Posted
On 1/5/2026 at 10:44 PM, goofyahhcats said:

modloader version by me self
i just convert to modloader ver

source: Muffination

 

Support Steam EN & JPN
 

Screenshot (55).png

honse.zip 14.3 MB · 3 downloads

Just to mention it if someone sees this -- This only replaces the Swimsuit with a Birthday Suit, so you have to manually change all (working) costumes to use the Swimsuit, too.
My original post also includes a Python-Exe which does this in case anyone does not want to do that manually.

Posted (edited)
On 1/4/2026 at 3:03 PM, goofyahhcats said:

you have to encrypt first

also i updated Mod Loader support steam JP and NO! I WILL NEVER MOD ON JP

2026_01_04_18_03_02_0_tr.png

2026_01_04_18_03_21_0_tr.png

It is actually very easy to port mods to JP (DMM Version).
You read out the Meta file of the JP Database using their Key (and mapping the individual assets to their JP File Name), mix-match the names of the EN Asset Files to them, and then store them back under the JP Name.

In fact, I added such a function to a local build of UmaViewer to test it out and that's how I made the JP Version of my Mod.

Edited by Muffination
Posted
6 hours ago, GreyGZ said:

 

Thnx it works, but there're another problems, so could it be place the UMPD inside the Cygames locallow first? (global version btw)
Or maybe should it be another way to detect cygames folder like manually edit the folder address in py or json?

image.png.e1225ad7300df19adf675237dbb99387.png

cannot

this is current default path for global

 

JP / DMM use game path & steam detect

Posted
On 1/4/2026 at 7:03 AM, goofyahhcats said:

you have to encrypt first

also i updated Mod Loader support steam JP and NO! I WILL NEVER MOD ON JP

2026_01_04_18_03_02_0_tr.png

2026_01_04_18_03_21_0_tr.png

is there a guide for that?

Posted (edited)
On 1/5/2026 at 3:44 PM, goofyahhcats said:

modloader version by me self
i just convert to modloader ver

source: Muffination

 

Support Steam EN & JPN
 

Screenshot (55).png

honse.zip 14.3 MB · 7 downloads

Is changing the "modloader_version:" to "1.2.10" in the setting.json file the correct way to convert it to modloader version? I noticed after I did that and loaded the assets the terminal said "no such table: a" Not sure how to fix that.

Edited by Celestialwisher
Posted
2 hours ago, Celestialwisher said:

Is changing the "modloader_version:" to "1.2.10" in the setting.json file the correct way to convert it to modloader version? I noticed after I did that and loaded the assets the terminal said "no such table: a" Not sure how to fix that.

download latest version bcus path support

Posted (edited)

Has anyone found a way to make the decryptor work on Linux at all? Getting the mod loader to work is relatively easy, but the decryptor puts a stop to going any further.

Edited by Soninthe3rd
Posted (edited)

I’ve tried using the latest nude mod for birthday suit but it goes to title screen and it’s stuck there

 

edit:

founded the problem, the chibi didn’t show in the loading screen. Changing the values of some trackwear will disable the chibis and crash the game.

i have another problem- starting career mode gets me stuck on loading screen with the chibi present. Any ideas?

Edited by vetazombislayer
Posted
On 11/12/2025 at 12:02 PM, Muffination said:

Works, here's my update in case anyone wants it (changes several costumes to Swimsuit and replaces its texture accordingly).image.png.cc15c3d72fe2482bd9b5cf8402510dc8.png

MOD.7z 25 MB · 59 downloads

They only appear like this when they're training; I don't know if I need to change something else.
Posted

When I try to load a mod I get this message, what should I do?

 

Failed to decrypt assets.

Try placing the script and mod on same disk.

This mod may also be incompatible with your game version or region.

 

b"

Posted
6 minutes ago, Chantunn said:

When I try to load a mod I get this message, what should I do?

 

Failed to decrypt assets.

Try placing the script and mod on same disk.

This mod may also be incompatible with your game version or region.

 

b"

Hold yer horses bruv.

image.png.05e9abf19e91ec89c6797daee6098fb9.png

I assume you are referring to the one shared recently(Kiseki)

 

Although it looks very good,this mod is for JP version .

Global not out yet😢

Posted
9 minutes ago, MadeInHaven said:

ちょっと待ってよ、兄弟。

image.png.05e9abf19e91ec89c6797daee6098fb9.png

最近シェアされたもの(キセキ)のことを指しているのだと思います

 

見た目はとても良いですが、このMODはJPバージョン用です。

グローバル版はまだ出ていません😢

No, Kiseki did work.
I can do this with other mods by F4de-san too, do you know anything about it?

Posted (edited)
38 minutes ago, Chantunn said:

When I try to load a mod I get this message, what should I do?

 

Failed to decrypt assets.

Try placing the script and mod on same disk.

This mod may also be incompatible with your game version or region.

 

b"

reload meta and load again

thus mod only work on JP

and update mod loader again if have issue w reload

Edited by goofyahhcats

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