Current version
| Field | Value |
|---|---|
| Latest major release | 1.7 “Crossroads of Civilisation” |
| Release date | September 18, 2026 |
| Latest hotfix tag | 1.7b (October 27, 2026) |
| Built for | Hearts of Iron IV 1.19.4 |
| descriptor supported_version | 1.19.4.* |
Recent releases
| Version | Date | Title |
|---|---|---|
| 1.7 | Sep 18, 2026 | Crossroads of Civilisation |
| 1.6.4 | Jun 11, 2026 | What Happened in Ju |
| 1.6.3 | Apr 22, 2026 | What Happened in Ju |
| 1.6.2 | Feb 27, 2026 | What Happened in Ju |
| 1.6.1 | Jan 9, 2026 | What Happened in Ju |
| 1.6 | Dec 22, 2025 | What Happened in Ju |
Between major releases the team publishes hotfix tags such as 1.7a and 1.7b on GitHub. A joke release, 1.6.7 “Quality of Life”, appeared on April 1, 2026 and was reverted shortly afterwards.
How version numbers work
The official patch notes explain that minor patches, such as 1.6.0 to 1.6.1, mainly refine content. The key rules for players:
- Major patches are never savegame-compatible with previous versions.
- Minor patches aim to preserve saves whenever possible.
- Letter tags (a, b, c) are hotfixes on GitHub.
Version eras at a glance
| Era | Notes |
|---|---|
| Alpha (from Dec 2016) | First HOI4 builds on Steam Workshop |
| Beta 0.10 (Dec 2019) | “Blood on the Yangtze”; the mod left alpha |
| Beta 0.2x (2022–2023) | Large reworks, e.g. 0.21 “A World Aflame” |
| 1.0 (late 2023) | First full release number |
| 1.x (2024–2026) | 1.2 “Pour le Mérite”, 1.4.4, 1.6 and 1.7 |
Getting older versions
Every release is tagged in the Kaiserreich-4 GitHub repository. Download the tag that matches your save and install it manually; our download guide explains the steps.
Matching Hearts of Iron IV versions
Each Kaiserreich release targets one HOI4 version. Paradox game updates can make the mod appear outdated until the team ships a compatibility patch. If you need to keep playing, Steam can roll HOI4 back through the Betas tab when Paradox offers older branches.
Where to read patch notes
The full changelogs are on the official Kaiserreich wiki patch notes page. We do not reproduce them here, because the team's notes are the authoritative record.
Get Kaiserreich 1.7
Free mod for Hearts of Iron IV, straight from the official GitHub repository.
