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Grand Strategy Wargames Dossier · World War II · 1936 — 1948

Hearts of Iron 4

Studio
Paradox Development Studio
Publisher
Paradox Interactive
Released
Jun 6, 2016
Platforms
PC · Mac · Linux

Hearts of Iron 4 is the fourth entry in Paradox Development Studio's Hearts of Iron series. Launched in June 2016, it is the reference grand strategy game for the Second World War: you play any nation between 1936 and 1948 and manage production, research, diplomacy and real-time-with-pause battles on a province-based world map. Deep national focus trees, massive moddability (a very active Steam Workshop) and famous alternate-history mods (Kaiserreich, The New Order: Last Days of Europe) make it one of Paradox's biggest successes across all its series.

Steam $14.99 $49.99 −70%

Steam US price, checked Nov 14, 01:20 PM GMT+1

Official site

State of the game

Current version
1.19
Latest expansion
Thunder at Our Gates
Jun 11, 2026
Expansions
15
since 2016 · see the timeline

Start here

  1. Top picks 01 Best HOI4 Mods 2026: Top 10 (Kaiserreich, TNO, Millennium Dawn) Our ranking of the 10 best HOI4 mods in 2026: Kaiserreich, The New Order, Millennium Dawn, Old World Blues, Road to 56, Equestria at War, and other must-haves.
  2. Top picks 02 HOI4 Alternate History Mods 2026: Kaiserreich, TNO, Old World Blues HOI4 alternate history and total conversion mods for 2026: Kaiserreich, TNO, Millennium Dawn, Old World Blues, with game versions and update dates checked on 5 November.
  3. Guide 03 HOI4 Console Commands & Cheats: Complete Guide 2026 All Hearts of Iron 4 console commands and cheat codes updated for 2026 — instantconstruction, manpower, research, tag, full cheat sheet and FAQ.
  4. Guide 04 HOI4 Beginner's Guide 2026: Tips for Your First Campaign (Patch 1.19.4) HOI4 beginner's guide for patch 1.19.4: which nation to pick, civilian factories first, research, divisions, battle plans and the mistakes that sink a first game.
  5. Guide 05 HOI4: how to do a naval invasion (patch 1.19.4) HOI4 naval invasion guide: over 50% naval supremacy, convoys, capacity, preparation, Floating Harbor and marines, plus why your invasion will not launch.
  6. Guide 06 HOI4 best division templates in 2026 (patch 1.19.4) HOI4 meta templates for patch 1.19.4: 18-20 width infantry, 25 width attack, 30-35 armor, mountain. Combat width by terrain and regimental support after 1.19.3.

Timeline

  1. 2016 Game release
  2. 2016 Together for Victory
  3. 2017 Death or Dishonor
  4. 2018 Waking the Tiger
  5. 2019 Man the Guns
  6. 2020 La Résistance
  7. 2020 Battle for the Bosporus
  8. 2021 No Step Back
  9. 2022 By Blood Alone
  10. 2023 Arms Against Tyranny
  11. 2024 Trial of Allegiance
  12. 2024 Götterdämmerung
  13. 2025 Graveyard of Empires
  14. 2025 No Compromise, No Surrender
  15. 2026 Peace for Our Time
  16. 2026 Thunder at Our Gates

All dispatches 24

  1. HOI4 Beginner's Guide 2026: Tips for Your First Campaign (Patch 1.19.4) Guide
  2. HOI4: how to do a naval invasion (patch 1.19.4) Guide
  3. HOI4 best division templates in 2026 (patch 1.19.4) Guide
  4. HOI4 Romanian Crossroads: Iron Guard vs monarchy, political paths revealed in October dev diary News
  5. HOI4 Dev Corner Energy: Energy Becomes a Local Resource, Outside Any Planned Expansion News
  6. HOI4 Patch 1.19.3 on September 17: Secret Australia Path, Next Expansion Delayed News
  7. HOI4 Romanian Crossroads: Breadbasket of Europe or Balkan Industrialist, Romania's Economic Dilemma News
  8. HOI4 Romanian Crossroads: Three Modders Build a Romania Focus Pack With Paradox News
  9. HOI4 Summer Beta: Technical Update on August 12, Balance Restored on August 14 News
  10. HOI4: Two Dev Corners in One Week Question the Civilian Economy and Military Production News
  11. HOI4 Summer Beta 2026: Sommarfältprov Nerfs Regimental Support, Buffs Line Artillery News
  12. HOI4 Thunder at our Gates: Australia, Siam and Dutch East Indies Get Their Focus Trees Preview
  13. HOI4 Thunder at Our Gates: Guide to Australia, Siam and Dutch East Indies (Patch 1.19) Guide
  14. HOI4 Thunder at Our Gates & War Effort Patch: Everything Coming June 11, 2026 News
  15. Hearts of Iron IV turns 10: a retrospective on the decade that redefined grand strategy Retro
  16. Best HOI4 Mods 2026: Top 10 (Kaiserreich, TNO, Millennium Dawn) Top picks
  17. HOI4 Götterdämmerung Germany: Focus Tree and Alt-History Paths Guide
  18. HOI4 Peace for Our Time review: is the Czechoslovakia Focus Pack really worth $5.99? Review
  19. Hearts of Iron IV: The Best Mods in 2025 News
  20. HOI4 best DLC in 2026: what to buy, prices and Steam reviews Guide
  21. Hearts of Iron IV: Best Mods of 2024 — Complete Guide to Customizing Your Game Experience News
  22. HOI4 Alternate History Mods 2026: Kaiserreich, TNO, Old World Blues Top picks
  23. HOI4 Console Commands & Cheats: Complete Guide 2026 Guide
  24. Hearts of Iron 4: World War II Simulation | Economic, Military and Political Management News

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