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Hearts of Iron IV
Hearts of Iron IV
SimulationStrategy
Paradox Development Studio · Paradox Interactive·$49.99
Apr 29, 2026 · 3mo ago

PEace For Our Time | Patch 1.18.1

AI summary3mo

A hotfix update focusing on the Czech and Slovak national focus trees, correcting several localization errors, and improving AI behavior for Germany and Slovakia.

Buffs7

  • Czechoslovakia
    • Wielding the Hammer:Added the 'Wielding the Hammer' focus to the Czech tree, providing a new national idea.Added
    • Emergency Measures:Added the 'Emergency Measures' focus to the Czech tree, providing a new national idea.Added
    • Demand the Czech Corridor:Added 'Demand the Czech Corridor' focus, allowing Czechoslovakia to demand land from Austria.Added
    • Contact the Czech and Slovak Legion:Completing 'Contact the Czech and Slovak Legion' now provides a number of air aces.0Multiple
    • Special Projects:Replaced modifiers for Czech special projects that were previously not functioning.BrokenWorking
  • PolandPoland now has a small focus branch granting access to Czech MIOs/Concerns.Czech MIOs
  • GermanyProduction:Adjusted German AI to ensure it produces an adequate number of transport planes.LowSufficient

Bug fixes2

  • CzechoslovakiaSkoda tank MIO:Fixed an issue where the Skoda tank MIO was incorrectly assigned to Armored Cars by default when creating variants.Armored CarCorrect
  • SlovakiaCosmetic Tag:Fixed an issue where puppet Slovakia's cosmetic tag would not update when changing overlord from CZE to GER.BrokenFixed

Other changes4

  • CzechoslovakiaThe Bohemia formable now uses a golden color for better visual distinction.Golden
  • PolandRealize the Polish Czechoslovak Confederation:The confederation focus now requires Poland to be at war with the same nations as Czechoslovakia.FlexibleSame War
  • Slovakia
    • Army Idea:Rebalanced the Slovakia Army Idea for better game balance.Rebalanced
    • AI Strategy:Added new AI strategy for Slovakia to actively assist Germany on the Eastern front.PassiveAggressive

subjects affected (4)

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How did this patch land?
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official notes
Hearts of Iron IV · Apr 29, 2026

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Patch history

see all 7

  1. HOI IV - Open Beta Summer Edition™Jul 6, 2026 · 1mo

    The Open Beta Summer Edition focuses on broad game re-balancing, specifically targeting Regimental Support companies, Line Artillery viability, and naval positioning mechanics.

    +1813
  2. Hotfix 1.19.0.1Jun 12, 2026 · 2mo

    Hotfix 1.19.0.1 addresses a specific crash during the Spanish Civil War and a UI bug with DLC icons.

  3. HOI IV - Open Beta Update VMay 13, 2026 · 3mo

    Open Beta Update V focuses on AI naval behavior improvements, stability fixes for large-scale naval battles, and various quality-of-life adjustments to lend-lease and supply tooltips.

    +4
  4. Warships of the Pacific - Hotfix, 1.17.5.2Mar 26, 2026 · 4mo

    A small hotfix focusing on UI and visual bugs within the division designer and tank pool displays.

  5. (Very small) Hotfix - Patch 1.17.4.1Feb 25, 2026 · 5mo

    A small hotfix addressing a bug where research bonuses were permanently active instead of being claimed.

  6. NCNS Patch 1.17.1.1Nov 27, 2025 · 8mo

    Patch 1.17.1.1 focuses on bug fixes for Chinese warlords, AI naval taskforce management, and corrections to Italian naval focuses.

    +2

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