Where Are Atomfall Save Files Located?
Atomfall save slots for Steam and Game Pass on PC, and how to move a save between them.
Last updated
The Steam build of Atomfall saves under %LOCALAPPDATA%\Atomfall\PC_ProfileSaves\[Steam-ID], with slot files named slot0.sav and up. Config sits alongside under %LOCALAPPDATA%\Atomfall.
Game Pass builds use a Packages container (%LOCALAPPDATA%\Packages\Rebellion.Windscale_...\SystemAppData) with obfuscated names instead. Moving between storefronts works by copying a Save file over and renaming it to the slot pattern, and reinstalling from cloud restores Game Pass saves that look lost after an uninstall.
Where Atomfall stores this, by platform
%LOCALAPPDATA%\Atomfall\PC_ProfileSaves\[Steam-ID]\
[Steam-ID] is your numeric Steam account ID. Slot files (slot0.sav etc.) live here per the official Rebellion pattern. Game Pass builds use a Rebellion.Windscale Packages container instead. No native Linux or Mac build exists.
Frequently asked questions
Can I move my Atomfall Game Pass save to Steam?
Yes. Copy the Save file out of the Rebellion.Windscale Packages container into PC_ProfileSaves\[Steam-ID] and rename it to the slot pattern (slot0.sav etc.). Back up both sides before trying.
My Atomfall saves vanished after reinstalling the Xbox app version. Are they gone?
Usually not. Deleting the install can hide local saves until you reinstall and let cloud sync pull them back. Check the Packages container path after reinstalling before assuming the worst.
Notice an outdated path? Let us know.