Use the developer-maintained locale repository and choose the folder for your edition: release for the full game, demo for the demo. A translation that fits one version is not automatically complete for another.
Documented installation
- Open the correct repository folder and download the intended locale JSON file.
- In Steam, choose Manage → Browse local files for the correct game entry.
- Put the file in
CasualtiesUnknown_Data/Lang, alongsideEN.json. - Launch the game, open settings through the drop capsule at the left, then select the locale in the Language tab.
Keep existing files and a copy of the original setup when diagnosing problems.
Russian and other release locales
The current README lists ru-RU.json, Simplified Chinese, Korean, Ukrainian, Vietnamese and two Spanish variants for release 1.0. The store officially lists English and Simplified Chinese; community repository availability is a different support claim.
When text is missing
Check the repository’s locale state and exact folder. The developer warns that community translations may be inaccurate or outdated. Do not rename a demo JSON and assume it becomes a current full-game translation. Use edition comparison if you are unsure which build you installed.
Sources & version notes
Reviewed against the primary sources below. Version-dependent details are identified in the article; these procedures have not been personally playtested.
- Developer locale repository: release/demo installation and status (2026-11-11 checked)
- Official Steam store: Casualties: Unknown (2026-11-11 checked)
Compiled from public sources. We have not personally played or tested these procedures. Check your installed build and its tooltips when details differ.