v4.3.5 Patch Notes
Ages of Conflict: World War Simulator Patch Notes — January 24, 2026
Aggregated from Steam, cross-tracked with Battle.net coverage on GamePatchNote.
Hello there guys!
Let's get into it!
Better Alliance Editing 🛡️
Since unions were added, editing them was quite tedious, by having to manually input unity values to change their status. Now it's much easier.
The pen icon that used to rename alliance now opens a new window where you can also easily which between alliances and unions, and even disband or unify the alliance!

Custom Workshop Item Thumbnails 🖼️
If you have artistic tendencies, or want to show your scenarios in better detail, you can now upload your items with custom thumbnails. -
To use your art, you need to put your thumbnails into a "_workshop_thumbnails_"-folder. This folder can be found where your saves and scenarios are saved.
Try to keep your thumbnail file size small, like under 2MB, since they will take up your cloud space and the upload might fail if the image is too big!

Some recommendations for custom thumbnails
Make the thumbnail relevant to the map, not random pictures
Either have the map at least partially visible on the thumbnail - OR - after you have uploaded your item, upload an additional image to your item where the map is shown. This can be done from the item's page on Steam.
The purpose is to not force players to subscribe blindly to something without an idea on what it looks like

Here's an example of a good thumbnail (created by L0maxx). But of course you can still do pretty much whatever you want.

v4.3.5 Full Changelog
Additions
Added a new way to edit alliances. The pencil button in alliance info now opens a new window where you can more easily edit the name, status and unity of an alliance
Added a way to add a custom thumbnail to workshop items
Added a setting to disable random flags
Added a setting to change the size of nukes
Bugfixes & Improvements
Improved game performance, removed the old performance mode setting
Fixed a bug where some history log types weren't filtered correctly
Fixed some in-game display settings not getting saved
Reordered some UI elements
Fixed some translations
Updated some flags