DLC

鋼鐵雄心4的DLC界面

可下載內容 (DLC)，是由Paradox Development Studio（PDS）製作的內容，是對鋼鐵雄心4的擴展或添加內容。它們本質上是模塊化的，這意味着玩家可以通過通過啟動器勾選是否需要特定的DLC進行遊戲。DLC通常隨附一個免費補丁更新，該補丁為玩家提供了大多數新的更新內容，以免阻礙遊戲的可玩性。大多數DLC均被視為可選購買內容。

多人遊戲也從這種兼容性中受益，也就是說，如果主機具有玩家沒有的DLC（擴展包和風味包），則其他玩家將享受與主機一樣的遊戲體驗。

注意：有關特定DLC的更多詳細信息可以通過單擊其圖標來獲取。

基礎遊戲

與遊戲相關的所有DLC都需要基礎遊戲。儘管單位包DLC/音樂DLC可以與任何遊戲版本一起使用，但擴展包和風味包DLC不能在其發行版本之前使用。

Title and Quick description
鋼鐵雄心4（Hearts of Iron IV） 發佈於 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.
鋼鐵雄心4：Mobilization Pack（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

擴展

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
共赴勝利（Together for Victory） 發佈於 2016-12-15. New national focus trees and events: Focus trees for 加拿大, 澳大利亞, 新西蘭, the 英屬印度 (India) and 南非. 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.
玉碎瓦全（Death or Dishonor） 發佈於 2017-06-14. Four New Focus Trees: Experience the war from the difficult perspectives of 匈牙利王國, 羅馬尼亞王國, 捷克斯洛伐克, and 南斯拉夫. 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.
喚醒勇虎（Waking the Tiger） 發佈於 2018-03-08. National Focus Trees for China: Guide 中華民國 or the 中共 through the war, guided by your own vision of the future. Modified Focus Trees: 德意志國 and 日本, 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.
炮手就位（Man the Guns） 發佈於 2019-02-28. Major Alternate Paths: Revive the Old Confederacy as the 美利堅合眾國 and provoke a new civil war, or hasten decolonization of the 聯合王國. 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 荷蘭 and 墨西哥. 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.
抵抗運動（La Résistance） 發佈於 2020-02-25. New Focus Trees for France: New National Focuses for Free 法國 and the 維希法國 Regime, as well as an option for conservatives to restore the old French Monarchy. More in Depth Spanish Campaign: New National Focuses for 西班牙共和國 and 西班牙國, 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 葡萄牙. 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.

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) 發佈於 2016-06-06. Focuses on 波蘭 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 packs

Music packs add new music created after the game's release to the game's soundtrack.

Title and Quick description
Pre-Order Pack (Not available for purchase) 發佈於 2016-06-06. Allied Radio: Composed by Tobias Gustafsson. Dance Your Troubles Away (3:39) From Glen to Glen (3:13) The Man on the British Countryside (3:10) Winter Came Spring (3:03) German March Order: Composed by Andreas Waldetoft. Der Machtigste Konig im Luftrevier (3:40) Panzerlied (3:12) Schwarzbraun ist die Haselnuss (2:23) Also includes the War Stories e-book pack.
Sabaton Soundtrack 發佈於 2016-06-06. Composed by Sabaton: Adds 5 World War II themed tracks by Sabaton that play during the game. (can't be used on LP videos due to 3rd party copyright). Hearts of Iron (4:28) Primo Victoria (4:11) Stalingrad (5:18) Wolfpack (5:56) Night Witches (3:01)
Sabaton Soundtrack Vol. 2 發佈於 2017-01-26. Composed by Sabaton: Adds 10 tracks illustrating moments of World War II with passion and power chords! (can't be used on LP videos due to 3rd party copyright). Ghost Division Resist and Bite Coat of Arms Uprising Screaming Eagles 40:1 Panzerkampf Smoking Snakes To Hell and Back The Last Battle
Radio Pack 發佈於 2019-06-04. Adds 35 new songs spread across three faction specific radio channels, each with their own unique look and design: Allies Radio Station Axis Radio Radio Comintern
Allied Speeches Pack 發佈於 2020-06-04. Monumental and inspirational moments from history come alive in your campaign game. Set to activate when certain in-game conditions are met, the Allied Speech Pack brings you closer to the past. 13 total speech excerpts with over 70 minutes of speech taken from the darkest days of the last century, including: Winston Churchill - Their finest hour Winston Churchill - We shall fight on beaches Winston Churchill - Blood, toil, tears and sweat Neville Chamberlain - Peace in our time Neville Chamberlain - Declaration of War Dwight D. Eisenhower - Order of the day Douglas MacArthur - I have returned Douglas MacArthur - Today the guns are silent Franklin D. Roosevelt - A date which will live in infamy Franklin D. Roosevelt - The Great Arsenal of Democracy Harry S. Truman - Warning to Japan Joseph Stalin - No invincible armies Georgy Zhukov - Victory Parade

Cosmetic packs

Cosmetic packs add graphical enhancements to the game, whether by additional unit models, landmarks or portraits.

Title and Quick description
Colonel Edition Upgrade Pack (Not available for purchase) 發佈於 2016-06-06. Heavy Cruiser Pack: Adds 7 heavy cruisers available for both Axis and Allies, including Exeter, Prinz Eugen and Mogami. Tank Pack: Adds 40 tanks, ranging from light to super-heavy (8 units for each nation), for: 法國 德意志國 蘇維埃聯盟 聯合王國 美利堅合眾國
Anniversary Pack (A free DLC) 發佈於 2017-06-06. 20 new portrait selections for generals and leaders across nations in Africa, Asia, Europe, and South America. 20 new custom division icons. New voiceovers for troops while playing as 波蘭.
Axis Armor Pack 發佈於 2019-06-04. Axis Armor Units: Adds 53 armor models for fascist regimes: 德意志國: 19 models from a range of tank destroyers, self propelled artillery and self propelled anti-air vehicles, including the Stug III, the Wespe and the Elefant heavy tank destroyer. 意大利: 12 models from a roster of Semovente tank destroyers and the always outmatched L6 tank highlight this list of Italian armor from the war. 日本: 22 models from a range of every armor type, with seven different Japanese tank designs like the experimental heavy O-I tank that never went into production and a number of tank destroyers. Axis Tank Units: Adds 8 tank units to 德意志國, including the King Tiger and the Maus super heavy tank.
Allied Armor Pack 發佈於 2020-06-04. Allied Armor Units: Adds a number of new armored and tracked vehicles for the Allies and Comintern powers: 法國: 8 units, including the Renault tank destroyer and the Canon de 194 self-propelled artillery. 蘇維埃聯盟: 13 units , including the early AT-1 tank destroyer and five SU artillery variants. 聯合王國: 7 units , including the the Deacon tank destroyer, Canada’s Sexton self-propelled artillery and Crusader anti-air units. 美利堅合眾國: 17 units , including the celebrated M7 Priest and the prototype M9 heavy tank destroyer. Allied Tank Units: Adds 32 tanks (8 units for each nation), ranging from light to super-heavy, for: 法國 蘇維埃聯盟 聯合王國 美利堅合眾國

E-books

E-books are books written based on the Hearts of Iron IV game. These, however, do not impact the actual game in any way whatsoever.

Title and Quick description
War Stories (part of Pre-Order Pack) Paradox account 發佈於 2016-05-16. Written by Aaron Rosenberg: A branching narrative (gamebook) about a young British pilot during the Battle of Britain. Be wise! The decisions you make will influence which skills you learn, your relationships with other characters and even the story’s outcome.
Art of War (Not available for purchase) 發佈於 2016-06-06. A 23-page book with art from the creation process of Hearts of Iron IV.

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
• dlc031 - Battle for the Bosporus