Where Are Cossacks 3 Save Files Located?
Cossacks 3 keeps saves, maps and replays in a lowercase cossacks folder directly in Documents on Windows.
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Cossacks 3 stores saves as .dat files in Documents\cossacks, all lowercase, alongside .map files and .rep replays. Steam's cloud config confirms that exact folder, so local files and cloud copies stay in sync without a second location to check.
The Mac and Linux ports keep their own local trees, but the cloud copy bridges them. That makes the Documents folder the only path most players ever need. If a save will not load after a major patch, suspect version drift first and file corruption second.
Where Cossacks 3 stores this, by platform
%USERPROFILE%\Documents\cossacks
Saves (.dat), maps (.map) and replays (.rep) in one lowercase folder. Steam Cloud syncs this tree, which also carries saves to the Mac and Linux ports. Copy it whole with the game closed.
Frequently asked questions
How do I back up my Cossacks 3 progress?
Copy the whole Documents\cossacks folder. It holds saves (.dat), maps (.map) and replays (.rep) together, and Steam Cloud syncs the same tree, so one copy covers local and cloud.
My old replay desyncs halfway through. Is it broken?
Nothing is lost. Replays only play back on the same game version that recorded them, so an old .rep from before a patch desyncs. Keep the recording version noted with any replay you archive.
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