Where Are Space Engineers Save Files Located?
Space Engineers saves and config on Windows plus the Proton path on Linux, and why Steam Cloud will not rescue you.
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Space Engineers keeps every world in its own subfolder under a Saves directory, each with a Sandbox.sbc file and matching metadata. The same parent folder holds SpaceEngineers.cfg, so one backup covers both progress and settings.
Do not rely on the Steam Cloud toggle. It exists in the client but syncs no game data, which surprises people after a reinstall. Copy the Saves folder by hand before wiping anything. Linux runs through Proton, so the identical Windows style tree nests under compatdata for AppID 244850.
Where Space Engineers stores this, by platform
%appdata%\SpaceEngineers\Saves
Each world gets a subfolder with Sandbox.sbc inside. SpaceEngineers.cfg sits in the SpaceEngineers parent, so copy that folder whole to keep settings with saves.
~/.steam/steam/steamapps/compatdata/244850/pfx/drive_c/users/steamuser/AppData/Roaming/SpaceEngineers/Saves
Proton path for AppID 244850. The Steam root varies, so search for compatdata/244850 if your library moved. The tree inside mirrors Windows exactly.
Frequently asked questions
Does Space Engineers use Steam Cloud?
The toggle exists but it stores no game data, so a reinstall starts empty. Back up %appdata%\SpaceEngineers\Saves yourself, ideally with a date in the folder name.
How do I move a Space Engineers world to another PC?
Close the game, copy the world subfolder from Saves, and drop it into Saves on the target machine. Matching DLC helps; mismatched block mods are the usual reason a transfer refuses to load.
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