A Zomboid world is a directory tree. Copy the entire selected save folder plus a record of the game build and mod list before updating a server/world or moving it to another machine.
Where Project Zomboid stores PC saves
The researched save-location boundary is Windows: %USERPROFILE%ZomboidSaves. The known file or folder pattern is mode/world folders containing map data, player data, and world database files. This is the practical starting point because launcher, profile, and storefront context can change which copy is active even when two folders look similar.
Storefront and profile differences
Documented launchers or storefronts: Steam, GOG. The active Steam, GOG installation determines which local profile and cloud copy can overwrite the save. Identify the storefront and account before restoring files. When looking for a missing save, identify the executable/storefront you actually launched and the user/profile that created the progress before copying anything between directories.
Cloud synchronization
Steam Workshop/mod state is separate from the local world folder; cloud is not a substitute for a complete manual world backup. A cloud service should be treated as another copy of the save, not as proof that the local folder is disposable. Before a manual restore, let synchronization finish, make an offline backup, and avoid starting the game while files are being replaced.
What the files represent
Project Zomboid saves are directories containing many world/player files rather than one portable save. Mods and game build can materially affect world compatibility. The current filename/folder evidence is mode/world folders containing map data, player data, and world database files. File-extension context: No single extension is sufficient to identify every relevant save record. A location guide does not claim that every file in the directory is safe to edit or that files from another storefront are automatically interchangeable.
If the save is not where expected
If progress is missing after a restore, confirm the active Windows account, storefront/profile, cloud state, and exact directory first. Restore the untouched backup before experimenting with individual files or older autosaves. Also check redirected Documents folders, Steam Play prefixes, account IDs, and launcher-specific containers where applicable. Preserve every candidate copy before testing a restore so troubleshooting does not destroy the only surviving version.
Verification context: Windows save location, file-boundary, launcher/cloud, and backup notes were reviewed against the linked game-specific references for Project Zomboid. This Game Hub is documentation only and does not claim a new game-specific Save Editor.
Recorded Phase 40 evidence boundary
This Phase 40 entry is grounded in the researched PC save boundary for Project Zomboid: Windows: %USERPROFILE%ZomboidSaves The recorded file or folder pattern is mode/world folders containing map data, player data, and world database files. These concrete identifiers are retained so backup, transfer, recovery, and editing preparation remain tied to the documented game/storefront context instead of a generic extension guess.