Downloadable content

For music, cosmetic packs or e-books see Downloadable content 2.

HoI4's DLC Interface.

Downloadable content (DLC) is content built by Paradox Development Studio (PDS) as an extension or add-on to Hearts of Iron IV. They are modular in nature, which means that a player can choose to play with or without a given DLC by checking them out at the launch menu. An expansion DLC is normally accompanied by a free patch that gives players most of the new content as not to hinder the playability of the game. As such, most DLCs are seen as optional content for players who wish to have a better gaming experience in exchange for some monetary support.

Multiplayer games also benefit from this compatibility, that is to say, if the host has a gameplay DLC (expansions and flavor packs) the player does not, the game acts as if the player has it.

Note: Further details on a specific title may be available by clicking on its banner or icon.

Base game editions

The base game is required for any and all DLC relating to the game. While cosmetic/music DLCs can be used with any game version, content DLCs can't be used prior to the version they were released with.

Title and Quick description
Hearts of Iron IV Released on 2016-06-06. Total strategic war: War is not only won on land, sea and in the air. It’s also achieved in the hearts and minds of men and women. Authentic real-time war simulation: Let the greatest commanders of WW2 fight your war with the tools of the time; tanks, planes, ships, guns and newly discovered weapons of mass destruction. Assume control of any nation: Choose from the greatest powers striving for victory, or the small nations trying to weather the storm. Turn the world into your battlefield: Experience the full WWII timespan in a topographical map complete with seasons, weather and terrain. Snow, mud, storms can be both your strong ally and a ruthless enemy. Negotiate or force your will: Experience the advanced politics and diplomacy systems, form factions, engage in trade for resources and appoint ministers to your party. Intense Online Combat: Battle in both competitive and cooperative multiplayer for up to 32 players. Featuring hotjoin and cross-platform multiplayer. Give your nation a unique edge: Experience the flexible technology system, where all major powers get their own unique identity. Develop detailed historic tanks and planes through research and army experience.
Hearts of Iron IV: Mobilization Pack Includes the base Hearts of Iron IV game and the following expansions: Together for Victory Death or Dishonor Waking the Tiger Man the Guns

Expansions

Expansions change the game considerably; introducing new and improved gameplay mechanics as well as many kinds of flavor and various balance tweaks (included in the accompanying free patch).

Title and Quick description
Waking the Tiger Released on 2018-03-08. National Focus Trees for China: Guide  China or the  Communist China through the war, guided by your own vision of the future. Modified Focus Trees:  German Reich and  Japan, two major Axis powers now have alternate history paths, including the chance to depose Hitler or restore democracy to Japan. General Traits and Abilities: Generals’ traits can now unlock powerful Command Power abilities, allowing great flexibility and creativity. Decisions and Missions: Historical decisions and national missions give new places to spend Political Power, from domestic politics to start special projects. And more: Scavenge equipment from the battlefield, use Volunteer Air Corps, as well as new music and art.
Man the Guns Released on 2019-02-28. Major Alternate Paths: Revive the Old Confederacy as the  United States and provoke a new civil war, or hasten decolonization of the  British Empire. Ship Design: Research new components and refit older vessels to take advantage of new knowledge. Outfit your submarines with snorkels or improved stealth. Admiral Traits and Skills: Tailor and level up your Admirals with new traits and skills. Governments in Exile: Welcome a government in exile to your democracy, boosting their legitimacy in return for more manpower and elite troops fighting to free their homeland. Other National Focuses: New national focuses for The  Netherlands and  Mexico. Naval Mines: Protect your coasts from invasion or assault with anti-ship mines, or clear a path through enemy mines before you make the big push. Shipping route controls: plot new routes for your shipping and navies by marking areas you want to avoid. Naval Treaties: Struggle to keep the peace by following internationally agreed upon rules, or creatively defy the world consensus by exceeding your limits. Amphibious Landing Vehicles: Add power to your beach landing by researching and producing specialized combat vehicles for your marines. New Music: Original music composed specifically for the Man the Guns expansion.
La Résistance Released on 2020-02-25. New Focus Trees for France: New National Focuses for Free  France and the  Vichy France Regime, as well as an option for conservatives to restore the old French Monarchy. More in Depth Spanish Campaign: New National Focuses for  Republican Spain and  Nationalist Spain, as well as an expanded Spanish Civil War that can spiral into a wider conflict.. Portuguese Focuses: Navigate the pressure of the World War, or involve yourself in the Spanish Conflict with the new Focus Tree for  Portugal. Espionage: Use you Intelligence Agency to train spies to specialize in certain types of information warfare and develop passive resistance to enemy espionage, then send them on special operations. Support Resistance: Use your agents to assist allied resistance movements, giving them what they need to damage the enemy. Collaboration Governments: Use your agents to prepare the ground for collaborators to fill the void once you’ve conquered your target. Code Cracking: Decrypt enemy communications to gain short term battlefield advantages. Recon units: Scout planes can provide useful information on nearby areas while armored cars help in detecting and suppressing resistance activities.

Country packs

Country packs are expansions of a smaller scale. Unlike regular expansions which focus on adding new gameplay mechanics country packs' main focal point is on adding more flavor to the game (in addition to the accompanying free patch).

Title and Quick description
Together for Victory Released on 2016-12-15. New national focus trees and events: Focus trees for  Canada,  Australia,  New Zealand, the  British Raj (India) and  South Africa. Alternate historical path: For each of the Dominions, with options to stay loyal to Great Britain, or forge a new, more independent destiny. New autonomy system: Giving subject states degrees of independence from a foreign master. Changes to Lend-Lease: Allows to ask allies to send you your desperately needed equipment. A Spearhead battleplan command: Allowing more control over grand encirclements and punching through enemy lines. Technology sharing: Allows Commonwealth nations to quickly catch up with British assistance.
Death or Dishonor Released on 2017-06-14. Four New Focus Trees: Experience the war from the difficult perspectives of  Hungary,  Romania,  Czechoslovakia, and  Yugoslavia. Equipment Conversion: Update your arsenal by converting older units - or make use of captured enemy vehicles and gear. New Diplomatic Interactions: License military technology to bring other nations' weapons to the field or sell your advances to the highest bidder. New Puppet Interactions: Fascist countries get new subject levels like Reichskommissariat, with access to licenses, industry and strategic resources. The instated governments are held in an iron grip, making it harder for them to break free. New Music and Art: 3 new thematic musical tracks from composer Andreas Waldetoft, new art content for the four focus nations, and new troop voiceovers.
Battle for the Bosporus Released on 2020-10-15. New dedicated national focus trees to the minor powers around the Black Sea and the Aegean. Bulgaria, Greece and Turkey can each chart unique historical and alternate history paths as they resist efforts by the major powers to dominate the strategic sea-lanes of the Bosporus and Dardanelles. National Focus Tree for  Bulgaria: Balance the factions in a divided land or reclaim territory lost in 1919. Follow the historical alliance with Germany or resist the German pressures on Tsar Boris, standing up for a free Bulgaria. National Focus Tree for  Greece: Riven by political division, Greek neutrality is maintained by the controversial Metaxas. Build a strong relationship with the Allies under the guidance of King George II, follow arch-conservatives into fascism or restore the glories of Greek Empire in the east. National Focus Tree for  Turkey: Robbed of its empire in the last war, what future is there for Turkey in a new one? Continue or halt the reforms of Kemalism, stand as the protector of the Balkans in a new regional faction, restore the Sultan to the throne or found a new Islamic state. New Music Tracks. New Models: 3D Unit Models for Balkan and Turkish armies. Unique voiceovers for  Bulgaria,  Greece and  Turkey.

Flavor packs

Flavor packs add new events, event pictures and unit models often specific to one nation or group.

Title and Quick description
Poland: United and Ready (A free DLC) Released on 2016-06-06. Focuses on  Poland Adds a unique national focus tree. 3D art for infantry and some more well known tanks and planes. 2D art for tanks & planes, complete with flavor names. 2D art for ministers, generals and country leaders. Complete Polish voice acting for military units. Some additional events.

Music, cosmetics and E-books

Main article: Downloadable content 2

Additional content is available for the game in the form of music and cosmetic packs, as well as e-books for reading outside of the game.

File names

List of DLC files in the /Hearts of Iron IV/dlc folder (bold names are expansions):

• dlc001 – Historical German Portraits
• dlc002 – Poland: United and Ready
• dlc003 – Rocket Launcher Unit Pack
• dlc004 – Famous Battleships Unit Pack
• dlc005 – Heavy Cruisers Unit Pack
• dlc006 – Soviet Tanks Unit Pack
• dlc007 – German Tanks Unit Pack
• dlc008 – French Tanks Unit Pack
• dlc009 – British Tanks Unit Pack
• dlc010 – US Tanks Unit Pack
• dlc011 – German March Order Music Pack
• dlc012 – Allied Radio Music Pack
• dlc013 – Sabaton Soundtrack
• dlc014 – Wallpaper
• dlc016 – Art of War (e-book)
• dlc018 – Together for Victory
• dlc019 – Sabaton Soundtrack Vol.2
• dlc020 – Death or Dishonor
• dlc021 – Anniversary Pack
• dlc022 – Waking the Tiger
• dlc023 – Man the Guns
• dlc025 - Axis armor pack
• dlc026 - Radio pack
• dlc027 - La Resistance preorder bonus
• dlc028 – La Resistance
• dlc029 - Allied armor pack
• dlc030 - Allied speeches pack