Where Are Space Engineers 2 Save Files Located?
Space Engineers 2 keeps worlds and blueprints in %APPDATA%\SpaceEngineers2\AppData, a separate tree from the original game.
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Space Engineers 2 files under %APPDATA%\SpaceEngineers2\AppData, with SaveGames and Blueprints as siblings. Each world is a folder rather than a single file, holding the world data and the thumbnail the main menu shows.
The '2' in the folder name is doing real work. The original game keeps its data in %APPDATA%\SpaceEngineers, so installing the sequel leaves your old worlds exactly where they were, and nothing moves across on its own. Porting worlds or blueprints is a manual copy between two folders, and during early access it is worth copying rather than moving, so the originals stay intact.
Where Space Engineers 2 stores this, by platform
%APPDATA%\SpaceEngineers2\AppData\SaveGames
One folder per world, thumbnail included. The original game's worlds live under %APPDATA%\SpaceEngineers and stay there; copying between the two trees is a straight folder move with both games closed.
%APPDATA%\SpaceEngineers2\AppData\Blueprints
Blueprint files sit next to SaveGames. They are small, which makes moving them between installs painless, and Steam Cloud syncs them along with the saves.
~/.local/share/Steam/steamapps/compatdata/1133870/pfx/drive_c/users/steamuser/AppData/Roaming/SpaceEngineers2/AppData
The Windows build through Proton on Linux and Steam Deck, inside the prefix for app ID 1133870. Roaming in the prefix maps to AppData in the path.
Frequently asked questions
Where are Space Engineers 2 worlds saved?
%APPDATA%\SpaceEngineers2\AppData\SaveGames, one folder per world with its thumbnail inside. The original game's worlds live under a different folder, %APPDATA%\SpaceEngineers, and stay there.
Where do Space Engineers 2 blueprints live?
In the Blueprints folder next to SaveGames, under the same AppData directory. Blueprints are small, so copying them between installs or bringing blueprints over from the original game is a simple folder copy.
Does Steam Cloud back up Space Engineers 2?
Yes, saves and blueprints both sync through Steam Cloud. Large grids mean large writes, so after a long build session, let Steam finish uploading before shutting the machine down.
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