ATCHED
Hearts of Iron IV
Hearts of Iron IV
Jun 11, 2026
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Thunder at our Gates - Available Now!

3/5 Moderate

Thunder at our Gates Theater Pack adds new content for Australia, Siam, and Indonesia alongside the Army HQ and Ship Captains features.

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Key Changes

  • 1New country content for Australia, Siam, and Indonesia
  • 2Introduction of the Army HQ gameplay feature
  • 3Addition of the Ship Captains feature
  • 4Regimental support added in the free base game patch
  • 5New Thunder at our Gates soundtrack
  • 6Free weekend access starting today

All Changes

🏳️Factions(3)

  • newAustralia: New country content added for Australia.
  • newSiam: New country content added for Siam.
  • newIndonesia: New country content added for Indonesia.

⚙️Gameplay Systems(3)

  • newArmy HQ: Introduced the new Army HQ gameplay feature.
  • newShip Captains: Added the Ship Captains feature to naval gameplay.
  • newRegimental Support: Added regimental support features as part of the free base game patch.

🎵Audio(1)

  • newThunder at our Gates Soundtrack: Added the brand new Thunder at our Gates soundtrack.

👥Community(1)

  • changeHearts of Iron IV: Free weekend access for Hearts of Iron IV starts today.

📅Coming Soon(3)

  • changeEnd of a New Beginning: Mod update scheduled for June 11th.
  • changeWorld Ablaze: Mod update scheduled for June 11th.
  • changeCold War Iron Curtain: Mod update scheduled for June 30th.

Summary

Thunder at our Gates Launch

Hearts of Iron IV has released its first Theater Pack, a smaller-scale DLC focused on the South-East Asian and Pacific theaters. This update introduces dedicated content for Australia, Siam, and Indonesia, alongside new gameplay mechanics like Army HQs and Ship Captains.

Free Update Features

Accompanying the paid DLC is a free patch that introduces regimental support features for all players. Additionally, a free weekend has launched to allow new players to experience the game.

← OlderThunder at our Gates | Patch Notes (1.19.0)Jun 10, 2026

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