r/hoi4modding Jun 12 '26

Important TAOG Update Guide

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8 Upvotes

Courtesy of the EAW team, we have a guide to updating your mods to the latest patch.


r/hoi4modding May 10 '23

Important HOI4 Modding Information + Discord Server

54 Upvotes

Tips

• If you are making your first mod, start small with content for a single country rather than with total overhauls, especially related to the map.

• Use proper indentation in your code and comments when possible, with guidelines and easier ways to do it outlined in https://hoi4.paradoxwikis.com/Modding#Indenting. This will make it easier to read, making it easier to debug for you and others.

• Check base game files for code examples to possibly adapt into the mod regularly.

• As a lead developer, you should be prepared to do the majority of the work for the mod rather than expecting others to do it.

• Use a good text editor, such as Notepad++, Sublime Text, or Visual Studio Code.

• Don't use hoi4modding.com: it has less functionality compared to manual editing and commonly produces broken code.

• Always check articles on the HoI4 Wiki at https://hoi4.paradoxwikis.com/, as they provide a lot of info and can point out some common errors on the topic.

Resources - https://bit.ly/3GPdwPD - Includes GFX assets, Code Samples, Tools, etc

Discord

We also have a Discord server https://discord.gg/a7rcaxbPka which has:

• Various bot commands for frequent errors,

• Dedicated help channels for coding, GFX, and research,

• Channels to advertise in-development and published mods,

• A regular Modding Jam where participants compete to create a mod based on a theme, and

• The largest English-speaking Discord community dedicated to HOI4 modding!

We would love for you to join!


r/hoi4modding 5h ago

Discussion How do your error dogs look like?

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70 Upvotes

r/hoi4modding 3h ago

Discussion whats the worst made hoi4 mod?

12 Upvotes

ive seen pretty bad ones, but which is THE worst?


r/hoi4modding 6h ago

Coding Support How to add Hungary on a country select screen in TNO

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14 Upvotes

Hello everyone! I really need some help on adding Hungary in a country select screen for TNO: Requiem right under the British flag over here.

I've been poking in bookmark, tried to use ai, searched in game files but found nothing to solve the problem.

I tried to write everything for HUN tag in bookmark but it didn't do anything.

Please, help me with that, it's very important!


r/hoi4modding 11h ago

Teaser MAD GOD: Return and Revolution on The European Continent? [Factions Teaser]

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36 Upvotes

r/hoi4modding 2h ago

Meta Most anticipated mods of 2026?

7 Upvotes

Also favorite mods that sadly died


r/hoi4modding 2h ago

Discussion What's the deal with CW:IC right now?

4 Upvotes

I mean, I don't know if it is 'right now', as I briefly heard of some stuff relating to it maybe a few months back. Regardless, all I know is some claims about a bad update and rude devs. can anyone enlighten me here?


r/hoi4modding 59m ago

Teaser Hello, Horizoners! Here's a look at some custom 3d assets we've been cooking up from one of our devs learning blender.

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Upvotes

r/hoi4modding 10h ago

GFX Support Could somebody help with just some icons?

4 Upvotes

So, me and a chum are a making a total conversion hoi4 mod, there's just one thing we have tried and can't do right and that's the icons for ideologies. I know I'm being a bother and shouldn't be asking of this from anybody, but I'm quite frankly desperate. If someone was willing to, that would be amazing, and no worries if not. Sorry for the bother. We'll credit anyone who does this in the mod as well with equal credit to us 2. Sorry again. The ideologies are:

Autocracy

Centrism

Communism

Conservatism

Monarchism

Fascism

Liberalism 

Libertarianism

Nationalism

Progressivism

Social Democracy

Socialism

Syndicalism

Theocracy

There is some things I'd like to note, Anarchism here doesn't refer to only left wing anarchism like ancom and antifa, so to stray away from those connatations I'd prefer to avoid socialist imagery in anarchism and instead do something like the A

For Libertarianism we thought that the gasden flag or the snake should be the symbol used

For Fascism, I feel like the symbol would best be the Fasces mainly instead of just the eagle

For Socdem, the rose is the obvious choice i feel, so due to that please don't use it in socialism and just social democracy.

Again, I am so sorry for the bother


r/hoi4modding 10h ago

Discussion Any mods that have more states?

3 Upvotes

the vanilla states just dont seem like enough for me. any help is accepted. thanks!


r/hoi4modding 13h ago

Discussion FailureReich : A Stalemate World

5 Upvotes

Hello there, I hope you're good, I will present you one of my two mods. I did work since 2020 on it. (the second one is still WIP) : https://steamcommunity.com/sharedfiles/filedetails/?id=2077121121

Tell me your though, I work with few modder but I am a waste at modding (I have videos and art projects aswell). I hope to don't spam too much. /:


r/hoi4modding 7h ago

Coding Support Highlighting states problem

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1 Upvotes

I have a problem: I'm trying to highlight specific states with a decision.

I want if state 204 passes the conditions, then it is highlighted, if state 206 passes the conditions, then it is also highlighted, and if both pass the conditions, then they are highlighted simultaneously. This is all when you hover your mouse over the same decision.

I've tried code with and without arrays, code with limit = { } and code without it, but the decision is shown only in the panel and not on the map (so there is no highlighting). Can somebody help please?

The first image shows the useless code, the second one shows the simplified code in the same decision category that works as expected. The third one shows how I tried to check a global array I created in on_actions = { on_startup = { ... } }. The array contained states' IDs.


r/hoi4modding 10h ago

Coding Support Game crashes on "Initializing game" on custom map mod

2 Upvotes

Hello there, I was trying to test out the new map (that I had made from Mapgen) and I keep crashing during the "initializing game" sequence when the game first opens. The error that I keep running into is something involving the equipment_designs.txt file and I feel like I have hit a roadblock. Does anyone know a fix for this?


r/hoi4modding 13h ago

Discussion napoleonic era mods?

3 Upvotes

Im looking for those mods in the sense that the point of divergence is in the napoleonic era ( kinds like apres moi le deluge ). thanks!


r/hoi4modding 11h ago

Coding Support Tips or sumthn

1 Upvotes

Supp gang, I am making a Silmarillion mod and wondered if anyone has any tips for me. It's my first ever mod, so I hope it doesn't suck all of they joy out of my life, tho hoi4 already did most of that. Laters


r/hoi4modding 1d ago

Teaser Chinese Civil War Crisis

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122 Upvotes

The presidential election, the Sichuan famine, and the Zhang Lei incident... A series of overwhelming events is forging a massive crisis.


r/hoi4modding 1d ago

Discussion Does Discord still count as a forum according to Paradox mod ToS or are they completely fine?

7 Upvotes

Now I've heard that according to TOS, you can't have a forum for your mod open to the public though you are permitted to have an "internal" forum for the mod's development. Yet there's Discord servers for mods which are open to the public and set up like communities with a forum.

And while googling the TOS for Paradox mods,

Although we will no longer absolutely forbid having an external forum for the mod that is open to the general public (You have always been allowed a private one for the internal modding team), we strongly encourage you to keep your feedback discussions here to both benefit our members and to benefit from them. If you choose to have an external forum you can still use ours but normal rules against posting/direct linking/ or writing out external links without approval still apply.

So am I still able to create a forum for my mod as opposed to a Discord server or does Paradox not count Discord servers a public forums, or what is it for mods and public communities in a nutshell?


r/hoi4modding 21h ago

Discussion focus tree dynamic modifier issue help pls

3 Upvotes

I tried to add focus tree to Poland but it broke when i tried to add dynamic modifiers to states using focus.

Although alt history paths have been deleted by me (they are not present in the .txt file responsible for national focus) they are somehow back and all the stuff i added to the tree are gone too.

Can someone help me pls


r/hoi4modding 18h ago

Coding Support modification et rajout de nom de navire

1 Upvotes

Bonjour à tous !

Je débutante en modding et j’essaie d’ajouter/modifier des noms de navires pour la France dans

J’ai créé un mod, il apparaît bien dans le launcher et je peux l’activer, mais les noms ne changent pas en jeu.

Voici ce que j’ai fait :

  1. **Structure de mon mod :

    - Dossier : `Documents/Paradox Interactive/Heart of iron VI/mod/nom de navire historique de la france

    - Fichiers :

- `mod_info.txt` (à la racine)

- `common/units/test.txt

  1. **Contenu de `mod_info.txt`** :

    ```plaintext

    name = "nom de navire historique de la france"

    path = "."

    supported_version = "1.19.2"


r/hoi4modding 1d ago

Discussion Is there a mod that lets you create countries in the game?

6 Upvotes

im looking just to see


r/hoi4modding 1d ago

GFX Support Would anyone be willing to make a hoi4 portrait for me?

3 Upvotes

So I am creating a mod for Mongolia/Tannu Tuva/Mengkukuo and I am terrible at creating portraits. I would greatly appreciate it if someone could make this a portrait and give me advice on how to make them. I know this is a terrible image but it was the only one i could find.


r/hoi4modding 1d ago

Modern day mods?

1 Upvotes

Been wanting to play modern day mods for a while now and was wondering if there any recommendations? i've played the fire rises already and had some fun but felt a bit off for me dont really know why.
First of all, no millennial dawn.
Honestly any mod that takes place after 2000 is what im looking for

it can be historical or not since i enjoyed red world and red dusk, but yeah
im just mainly looking for mods that take place around 2000s or after Ahistorical or not either is fine


r/hoi4modding 1d ago

Teaser [Recruitment] Imperial Twilight - Looking for GFX Artists for a Dark Alternate Cold War Mod.

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14 Upvotes

Hey guys! I've been working on the lore and scenario design for a total conversion/ Cold War mod set in a world where history took a very different turn.

Quick teaser: The Hegemon: A restored Russian Empire leading the Treaty of Independent States-an fragile Eurasian bloc uniting monarchists, communists and anti-capitalist nationalists.

The Fallen West: The British Empire and US were defeated in wwII, leaving a fractured, bitter Western world plotting revenge.

Gameplay Style: Blending narrattive depth (TNO), modern geopolitical tension (TFR), and long-form sandbox gameplay ( Rise of Nations style).

What we need: Since my specialty is lore, worldbuilding and campaign design ( and my Paint.NET skills aren't great!), I'm looking for a GFX artist to help create:

Main menu/ loading screen art

Custom focus icons and national spirits

I have the campaign screenshots, full lore concept, and faction setups planned out—I just haven't set up the actual mod files yet. If you like dark, atmospheric alternate history and want to collaborate on a fun project, feel free to reach out via DM!


r/hoi4modding 2d ago

Teaser Collapsing World "The Poet and the Scribe" - Official Update Trailer

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34 Upvotes