Download the desktop app (Windows)

The desktop version of the AoH2 Save Editor is a free, standalone Windows program. It does everything the web editor does, and is a better fit if you edit saves often or work with very large save files.

Desktop vs. web — which should I use?

• Desktop app: runs offline, no ads inside the program, handles huge saves a bit faster, and remembers nothing between sessions unless you tell it to. Windows only.
• Web editor: nothing to install, works on any device including phones and Linux/Mac, always the latest version. Your saves stay in your browser — nothing is uploaded.

Both use the exact same engine and produce identical results. Pick whichever suits you.

What it does

Opens Age of History II / Age of Civilizations II save files and shows them as an editable tree — every value the game stores: money, civilization names, province ownership, diplomacy, technology, and more. You edit what you want and it writes back valid save files the game loads normally. See the Guide for step-by-step examples, including transferring provinces and ending wars.

How to install

1. Click the download button above and grab AoH2SaveEditor.exe from the latest release.
2. Double-click it to run — no installer, it's a single portable program.
3. Windows SmartScreen may warn about an unrecognized app (normal for small independent tools that aren't code-signed). Choose More info → Run anyway, or build it yourself from source if you prefer — the full code is public on GitHub.

Requirements

• Windows 10 or 11.
• Nothing else — the .exe is self-contained. (If you run from source instead, you need Python 3.12+ and pip install javaobj-py3.)

Safety

The editor never overwrites your original saves — it writes edited copies and keeps timestamped backups in a separate folder. Still, always keep your own backup of a save folder before replacing files, as with any save-editing tool. The project is open source, so you can inspect exactly what it does.

Source code & issues

Everything is on GitHub: github.com/Bat0oo/aoh2-save-files-editor. If a save doesn't open or something doesn't work, open an issue there with the details and I'll take a look.