Where Are Sackboy: A Big Adventure Save Files Located?
Sackboy saves costumes and knitted progress in a Sackboy folder under Saved Games, synced by Steam Cloud.
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Sackboy: A Big Adventure follows the PlayStation-PC pattern: Saved Games/Sackboy/Steam with SaveGames for progress and Settings for config. Generic AppData guess-guides point elsewhere; the Saved Games tree is the confirmed one.
Cloud restores fight manual wipes, so pause sync before deleting anything. Confirm the fresh save loads once, then re-enable Cloud and let it adopt the local state. Costume unlocks travel with the same files.
Where Sackboy: A Big Adventure stores this, by platform
%USERPROFILE%\Saved Games\Sackboy\Steam\SaveGames
Progress in SaveGames, config in Settings. Ignore generic AppData guesses; this tree is player-confirmed. Pause Cloud for wipes and restores.
~/.local/share/Steam/steamapps/compatdata/1599660/pfx/drive_c/users/steamuser/Saved Games/Sackboy/Steam/SaveGames
Proton prefix for app ID 1599660; the Saved Games tail inside mirrors Windows. Same Cloud-pause rule on Steam Deck.
Frequently asked questions
How do I back up Sackboy saves?
Copy the whole Sackboy folder with the game closed. To restart fully, also pause Cloud and pick the new local save when it asks.
How do I delete my Sackboy save and start over?
Delete the SaveGames contents with Cloud paused, start fresh, then re-enable Cloud and choose the new local save to overwrite the old cloud copy.
Notice an outdated path? Let us know.