Checkpoint64 has a preset for Project Zomboid: it already knows where the save folder is, backs it up automatically and keeps every version. Everything this site has on Project Zomboid:
Project Zomboid
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Save file location
Windows:
%USERPROFILE%\Zomboid\Saves
macOS:~/Zomboid/Saves
Linux:~/Zomboid/Saves -
Backup guide
Zomboid deletes your character on death by design, and a crash mid-write can take the whole save with it. Checkpoint64 keeps every version of the Zomboid folder and adds a shared lock for co-op worlds, so a bite or a bad write is one click from undone. Free download.
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Server ports
UDP 16261-16262 -
Launch options
-debug-novoip -
Sharing with friends
How to share your Project Zomboid world with friends, from playing live to taking turns when the host is offline.