HoI4: The Great War – huge mod for Hearts of Iron IV updated to 0.25

Hey everyone, just wanted to let you know a big update dropped for The Great War mod for Hearts of Iron IV! It’s one of my favorite ways to play the game – it really throws you into what World War I could have been like. This new version, 0.25, is packed with changes, so it’s a great time to jump back in or check it out if you haven’t already.

1. The mod is now Compatible with Hearts of Iron IV 1.16.10
2. Defines have been updated in order to include the new game variables
3. New content for German Interwar with new National Focuses
4. An improved Arabian Map, closer to the reality of 1910
5. New content for Jabal Shammar
6. Improved state shapes in Poland
7. Changed Montenegro tag from MTN to MNT to sync with Vanilla and make for easier upkeep
8. Added dozens of provinces to the Middle East
9. Reworked Montenegro Map
10. Better country colors for Qing Dynasty and Japan
11. New Description for the Russian NF: Honor Russian Imperial Family
12. New Description for the Russian NF: Deal with Trotsky
13. New Description for the French NF: Help Koltchak
14. Added Polish cores for 1910/1914 scenarios
15. Minor bugs and typos have been fixed

The mod has been in development since 2016.

In The Great War, players can begin their game in 1910. To support this earlier start date, the developers have added a lot of new content, including units, technologies, characters, national flags, sound effects, and historical events. The game also features a new map and several improvements to how it plays. Even though it’s currently version 0.25, it’s fully playable and offers many hours of engaging gameplay.

This update to the mod is especially appreciated because its creators are simultaneously developing their own large-scale strategy game, Fields of History: The Great War. They recently announced a partnership with MicroProse, who will publish and fund the game’s development. It’s great that they’re continuing to support the mod even while working on their commercial project.

1. The Great War – download the mod

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2025-11-16 13:02