PatchDiff
gamesnewsabout
Hearts of Iron IV
Hearts of Iron IV
SimulationStrategy
Paradox Development Studio · Paradox Interactive·$49.99
Jul 6, 2026 · 1mo ago

HOI IV - Open Beta Summer Edition™

AI summary1mo

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

Buffs18

  • Regimental Support Companies
    • Heavy Weapons Company:Heavy Weapons and Motorized Heavy Weapons Companies now have higher organization.2030
    • Heavy Weapons Company:Heavy Weapons and Motorized Heavy Weapons Companies increased in max strength.0.40.6
    • Anti-Air Battery:Breakthrough, Soft and Hard Attack penalties for Anti-Air Batteries reduced.-80%-60% %
    • Anti-Tank Battery:Soft Attack penalty for Anti-Tank batteries reduced.-80%-60% %
  • Line Artillery
    • Max strength increased for Artillery, Rocket Artillery, and Anti-Air line units.0.60.8
    • Artillery Equipment I:Slightly increased soft attack for Artillery Equipment I.2526
    • Artillery Equipment I:Breakthrough increased for Artillery Equipment I.610
    • Artillery Equipment II:Breakthrough increased for Artillery Equipment II.713
    • Artillery Equipment III:Breakthrough increased for Artillery Equipment III.816
    • Rocket Artillery Equipment I:Breakthrough increased for Rocket Artillery Equipment I.917
  • Naval Combat
    • Maneuver Skill:Admiral Maneuver Skill now increases naval retreat speed more effectively.1%2% %
    • Naval Bombers:Naval bombers are more likely to target fully screened capital ships.1015
    • Naval Bombers:Naval bombers are significantly more likely to target fully screened carriers.1025
  • Air Force
    • Dive Bombing Air Spirit:Dive Bombing Air Spirit now provides mastery gain instead of design cost reduction.cost reduction+15% %
    • Material Destruction Air Spirit:Material Destruction Air Spirit now provides medium aircraft mastery gain.cost reduction+15% %
    • Industrial Destruction Air Spirit:Industrial Destruction Air Spirit now provides heavy aircraft mastery gain.cost reduction+15% %
    • Massed Strike Air Spirit:Air Superiority Effect increased for Massed Strike Air Spirit.5%10% %
  • General GameplayFacilities:Initial cost of Naval, Land, and Air facilities lowered, but scaling cost increased.1200010000

Nerfs13

  • Regimental Support Companies
    • Infantry Guns / Rocket Battery:Infantry Guns and Rocket Batteries now require more equipment.46
    • Anti-Air Battery:Anti-Air Battery equipment requirement increased.1216
    • Anti-Air Battery:Anti-Air Battery manpower requirement increased.120180
    • Anti-Tank Battery:Anti-Tank Battery manpower requirement increased.120180
    • TD-RS / SPAA-RS:Tank Destroyer and SPAA Regimental Support now require 15 units instead of 10.1015
    • TD-RS / SPAA-RS:Fuel consumption increased for TD-RS and SPAA-RS.33%40% %
    • TD-RS / SPAA-RS:Armor value significantly reduced for TD-RS and SPAA-RS.-33%-66% %
    • TD-RS / SPAA-RS:Defense lowered for TD-RS and SPAA-RS.-25%-50% %
    • TD-RS / SPAA-RS:Soft attack lowered for TD-RS and SPAA-RS.-33%-66% %
  • Naval Combat
    • Superior Tactician:Superior Tactician Admiral Trait now provides less positioning bonus.25%15% %
    • Maneuver Skill:Admiral Maneuver Skill impact on positioning reduced.2.5%1.5% %
  • Air ForceContinuous Strike Air Spirit:Air Support Efficiency bonus reduced for Continuous Strike Air Spirit.25%15% %
  • General GameplayDivision Experience:Combat bonus from division experience decreased to reduce stat bloat.25%20% %

Other changes3

  • Regimental Support CompaniesInfantry Guns / Rocket Battery:Defense, Breakthrough, Soft and Hard Attack penalties normalized to -75%.mixed-75% %
  • General Gameplay
    • Battalion Adjusters:Battalion Adjusters now scale with the actual equipment and manpower status of the sub-unit.staticEquipment/Manpower
    • Self-Propelled Artillery:Combat width for all SP Artillery increased back to 3.23

subjects affected (5)

tap to see balance history

How did this patch land?
🔗
official notes
Hearts of Iron IV · Jul 6, 2026

Related Deals

Gear, keys & collectibles for Hearts of Iron IV

Affiliate links — we may earn a commission. Prices and availability are set by eBay sellers and may change.

Enjoying PatchDiff?
AI & server costs add up — a coffee helps keep it free for everyone. Thank you!

Patch history

see all 7

  1. 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.

  2. 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
  3. PEace For Our Time | Patch 1.18.1Apr 29, 2026 · 3mo

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

    +7
  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

Recently Updated

6

Similar Games

6