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Hearts of Iron IV

From PCGamingWiki, the wiki about fixing PC games
Hearts of Iron IV
Hearts of Iron IV cover
Paradox Development Studio
Paradox Interactive
Release dates
Windows June 6, 2016
macOS (OS X) June 6, 2016
Linux June 6, 2016
Metacritic 83
OpenCritic 83
Monetization One-time game purchase, Expansion pack, Subscription
Microtransactions Cosmetic
Modes Singleplayer, Multiplayer
Pacing Real-time
Perspectives Bird's-eye view
Controls Menu-based, Point and select
Genres Strategy, Wargame
Art styles Stylized
Themes Interwar, Historical
Series Hearts of Iron
Hearts of Iron IV on HowLongToBeat
Hearts of Iron IV on IGDB
Hearts of Iron IV on MobyGames
Hearts of Iron IV on Wikipedia
Hearts of Iron
Hearts of Iron 2002
Hearts of Iron II 2005
Hearts of Iron III 2009
Arsenal of Democracy: A Hearts of Iron Game 2010
Darkest Hour: A Hearts of Iron Game 2011
Hearts of Iron IV 2016

Hearts of Iron IV is a singleplayer and multiplayer bird's-eye view strategy and wargame game in the Hearts of Iron series.

General information

Official Forum
Steam Community Discussions
Official Wiki


Version differences

The Cadet Edition is the standard purchase, containing the Poland: United and Ready expansion pack, and additional Paradox Forum cosmetics.
The Subscription is a recurring monthly purchase, containing Poland: United and Ready, all other DLC, and will provide all DLC already not bought.
The Starter Pack includes the Cadet Edition, plus the Together for Victory, Death or Dishonor, and Waking the Tiger expansions.
The Ultimate Bundle includes the Cadet Edition, all expansions, all cosmetic music and model packs.


Type Notes
Expansion pack The game is primarily supported through expansions and cosmetic packs, including but not limited to music, models/units, events, National Focus Trees, and Research Trees.
Subscription A monthly subscription is available that grants access to all current and future DLC.[1]

DLC and expansion packs

Name Notes
By Blood Alone Upcoming.[2] Revamps peace conference negotiations. Adds awarding armies, an aircraft designer for all nations and national embargoes. Overhauls Italy, Ethiopia and Switzerland.
macOS (OS X)
No Step Back Army supply overhaul. Adds a tank designer for all nations. Overhauls Poland once more, Lithuania, Estonia, Latvia, and the Soviet Union.
macOS (OS X)
Battle for the Bosporus Overhauls Bulgaria, Greece, and Turkey.
macOS (OS X)
La Résistance Adds an espionage system for all nations. Overhauls France (incl. Free and Vichy France), Spain, and Portugal.
macOS (OS X)
Man the Guns Adds a new ship designer and a governments-in-exile system for all nations. Overhauls the United States, the United Kingdom, the Netherlands, and Mexico.
macOS (OS X)
Waking the Tiger Adds new autonomy options for Imperial Japan. Overhauls land warfare via Field Marshals, commander traits, weather acclimation, volunteers and Decisions. Overhauls Germany, Japan, China (incl. all warlords), and the Second Sino-Japanese War.
macOS (OS X)
Death or Dishonor Adds equipment conversion, technology licensing and autonomy options for Nazi Germany. Overhauls Hungary, Romania, Czechoslovakia and Yugoslavia.
macOS (OS X)
Together for Victory Adds a national autonomy system, allied lend-leases, "spearhead" battleplans, technology sharing and a land battle logging system. Overhauls Canada, Australia, New Zealand, South Africa, and the British Raj.
macOS (OS X)
Poland: United and Ready First expansion, free. Overhauls Poland.
macOS (OS X)
Expansions may affect international diplomacy and content by adjusting focus trees, decisions and events based on what expansion is owned.


Type Notes
Cosmetic Multiple gameplay and audio cosmetic packs (such as Allied/Axis tank packs and Songs from the Eastern Front) available to purchase with little effect on how the game functions.

Game data

Configuration file(s) location

System Location
Windows %USERPROFILE%\Documents\Paradox Interactive\Hearts of Iron IV\
Microsoft Store
macOS (OS X) $HOME/Paradox Interactive/Hearts of Iron IV/
Linux $XDG_DATA_HOME/Paradox Interactive/Hearts of Iron IV/
This game follows the XDG Base Directory Specification on Linux.

Save game data location

System Location
Windows %USERPROFILE%\Documents\Paradox Interactive\Hearts of Iron IV\save games
Microsoft Store
macOS (OS X) $HOME/Paradox Interactive/Hearts of Iron IV/save games
Linux $XDG_DATA_HOME/Paradox Interactive/Hearts of Iron IV/save games

Save game cloud syncing

System Native Notes
Requires enabling backup of the Documents folder in OneDrive on all computers.
Steam Cloud
Xbox Cloud


Video settings.
Video settings.

Graphics feature State Notes
Widescreen resolution
Will crash on initial launch. Game must be played in windowed, with resolution set to compensate for all monitors.[3]
4K Ultra HD
UI does not scale with resolution. Has experimental UI scaling.
Field of view (FOV)
Borderless fullscreen windowed
Anisotropic filtering (AF)
See the glossary page for potential workarounds.
Anti-aliasing (AA)
Up to 8x MSAA. Controlled by "Multisample Level".
Vertical sync (Vsync)
60 FPS and 120+ FPS
FPS is uncapped.
High dynamic range display (HDR)
SDR color space, no HDR Rendering nor Hardware HDR. Hardware HDR is automatically disabled upon using the OpenGL renderer, however not with DirectX9 or 11.
Color blind mode
Use Colourblindness Mod


Input settings.
Input settings.

Keyboard and mouse, touch State Notes
Partially available via mods - certain keybinds are only declared in interface code.
Mouse acceleration
Acceleration is 1:1 with mouse settings.
Mouse sensitivity
Configurable in settings.txt "mouse_speed=50.000000" (default)
Mouse input in menus
Mouse Y-axis inversion
Touchscreen optimised
Controller support
Controller types


Audio settings.
Audio settings.

Audio feature State Notes
Separate volume controls
Master, effects, music, ambient and unit voices.
Surround sound
Closed captions
Mute on focus lost
Royalty free audio


Language UI Audio Sub Notes
All unit VO is in their respective countries' language.
Available on the Steam Workshop
Simplified Chinese
Available on the Steam Workshop
Available on the Steam Workshop
Brazilian Portuguese
Available on the Steam Workshop


Multiplayer types

Type Native Players Notes
Local play
LAN play
32 Versus, Co-op
Online play
32 Versus, Co-op

Connection types

Issues unresolved

Wayland incompatibility

As of September 30, the game isn't compatible with Wayland.[5][6] To get it working with Wayland, you must bypass the launcher and disable MSAA as a workaround. To bypass the launcher, add "-nolauncher" as a Steam launch option. To disable MSAA, go to ~/.local/share/Paradox Interactive/Hearts of Iron IV/ and set the value for "multi_sampling" to 0 in the "settings.txt" file. Please note that if this workaround is implemented, you may also need to manually set the screen resolution in the "settings.txt" file as well.

Other information


Technical specs Supported Notes
Direct3D 9.0c, 11 Defaults to DX9. DX11[7] must be selected in launcher settings.
OpenGL 4.6.14761 OpenGL versioning and developer extensions are logged under "system.log" when the game is launched.
Shader Model support 3.0
Executable 32-bit 64-bit Notes
32-bit no longer supported after update 1.7.0 Hydra
macOS (OS X)
32-bit no longer supported after update 1.7.0 Hydra
32-bit no longer supported after update 1.7.0 Hydra


Middleware Notes
Interface Dear ImGui v1.76. Middleware noted in licenses.txt.
Input SDL v2.0.4. Middleware noted in licenses.txt.
Multiplayer Enet v1.0. Middleware noted in licenses.txt.

System requirements

Minimum Recommended
Operating system (OS) 7, 8.1, 10 (64 bit)
Processor (CPU) Intel Core i5-750 2.66 GHz
AMD FX 4300 3.8 GHz
System memory (RAM) 4 GB
Hard disk drive (HDD) 2 GB
Video card (GPU) Nvidia GeForce GTX 470 (1.28 GB)
AMD HD 5850 (1 GB)
1 GB of VRAM
DirectX 9.0c compatible
Sound (audio device) DirectX 9.0c compatible
A 64-bit operating system is required.
macOS (OS X)
Minimum Recommended
Operating system (OS) 10.11 (El Capitan)
Processor (CPU) Intel Core i5 2.60 GHz or better
System memory (RAM) 4 GB
Hard disk drive (HDD) 2 GB
Video card (GPU) ATI Radeon HD 6970M (1 GB)
1 GB of VRAM
A 64-bit operating system is required.
Minimum Recommended
Operating system (OS) Ubuntu 14.04 (32 bit)
Processor (CPU) Intel Core 2 Quad Q9400 2.66 GHz
AMD Athlon II X4 650 3.20 GHz
System memory (RAM) 4 GB
Hard disk drive (HDD) 2 GB
Video card (GPU) ATI Radeon HD 5850
Nvidia GeForce GTX 470
1 GB of VRAM
A 64-bit operating system is required.