Where Are Cobalt Core Save Files Located?
Cobalt Core keeps Slot0 to Slot2 run folders in AppData\Roaming\CobaltCore on Windows (Application Support on Mac, Proton prefix on Linux).
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Cobalt Core stores each run slot as its own folder with Save.json inside, sitting directly in Roaming CobaltCore on Windows. Mac and Linux builds mirror the layout in their platform homes. Mod loaders operate on these same folders for slots and libraries.
JSON readability makes the format friendly to editors and hand tweaks alike. Ship layouts, artifacts, decks, and maps all parse as text. Copy folders whole for backups since slots reference nothing outside themselves.
Where Cobalt Core stores this, by platform
%APPDATA%\CobaltCore
Slot0 to Slot2 folders with Save.json each. Copy whole tree with game closed. Mod tools read the same folders.
~/Library/Application Support/CobaltCore
Same slot folder layout on Mac. Settings.json sits beside saves. Reach with Finder Go to Folder.
~/.local/share/Steam/steamapps/compatdata/2179850/pfx/
Proton prefix for app ID 2179850 mirroring the Windows tree. Native builds use the same relative layout. Copy saves out first.
Frequently asked questions
How do I back up Cobalt Core runs?
Copy the Slot folders with the game closed, since each holds Save.json plus state for its run. Mod loaders read the same folders, so back up before modding. Cloud copies under userdata mirror them.
Can I edit Cobalt Core saves?
Open Save.json in a text editor since runs store as readable JSON with ship, artifacts, and map sections. Editors exist but hand edits work for small tweaks. Back up before editing anything.
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