Slay the Spire 2 Save File Corrupted — How to Fix & Recover

Last verified: 2026-09-23

If Slay the Spire 2 says your save is corrupted or won't load — usually right after a Steam Cloud sync conflict — don't relaunch and let it overwrite. Here's the exact folder to protect, how to roll back to your last good run, and how to stop the cloud from re-corrupting it.

Save file

%AppData%\SlayTheSpire2\steam

If Slay the Spire 2 says your save is corrupted or won't load after a Steam Cloud sync, stop — don't relaunch and let it overwrite. Your runs live at %AppData%\SlayTheSpire2\steam (open it with Win+R → %AppData% → SlayTheSpire2 → steam); some builds also use C:\Users\<you>\AppData\Local\SlayTheSpire2\saves. Close the game, copy that whole folder somewhere safe first, then recover: look inside for the game's own .bak / backup copy of the newest run and rename it back into place, and if the local files are all bad, roll back through Steam Cloud. The current wave of corruption reports traces to picking 'cloud' on the sync-conflict prompt — so fix the sync, not just the file.

How to transfer your Slay the Spire 2 save to a new PC

Fully close Slay the Spire 2 — check Task Manager so no leftover SlayTheSpire2 process is still writing to the save while you work.
Open the save folder: press Win+R, type %AppData%\SlayTheSpire2\steam and press Enter. If it is empty, also check C:\Users\<you>\AppData\Local\SlayTheSpire2\saves.
Back up EVERYTHING first: copy the entire folder to your Desktop or a USB drive. This is your undo button — do it before touching anything.
Look for the game’s own backup inside that folder: a file ending in .bak / .old / .backup or an autosave copy. If one is newer-than-corrupt, rename the bad file out of the way and rename the backup into its place, then launch.
Fix the Steam Cloud conflict (the current common cause): exit the game, turn OFF Steam Cloud sync for Slay the Spire 2, restore your known-good local backup, launch to confirm it loads, THEN re-enable sync so the good save uploads — not the corrupt one.
Verify the game files (Steam: right-click Slay the Spire 2 › Properties › Installed Files › Verify integrity) to rule out a damaged install rather than a damaged save.
Still stuck? Right-click the save folder › Properties › Previous Versions, or check Windows File History / a restore point for an older copy from before the corruption.

Does cloud sync move it for you?

The Slay the Spire 2 corruption most players are hitting right now comes from the Steam sync-conflict prompt: when Steam asks whether to use the CLOUD or LOCAL save and you pick cloud, an out-of-date or half-written cloud copy overwrites your good local run and the game then throws a critical error on launch. If you have not launched since: turn off Cloud sync for the game in its Steam properties, restore the local backup you copied in step 3, confirm it loads, then turn sync back on so the clean save is the one that uploads.

Common mistakes

Overwriting before backing up. The #1 way people turn a recoverable run into a lost one — copy the whole SlayTheSpire2 folder first (step 3).
Picking “cloud” on the sync-conflict prompt again. That is exactly what triggers the current wave of corruption — disable sync and restore locally before you let it sync once more.
Looking in the wrong AppData. Slay the Spire 2 uses Roaming\SlayTheSpire2\steam on most builds but some installs write to Local\SlayTheSpire2\saves — check both.
Assuming it’s the save when it’s the install. If nothing loads at all, verify the game files before writing off your run.

FAQ

Where is the Slay the Spire 2 save file on PC?

Most builds store runs at %AppData%\SlayTheSpire2\steam (press Win+R, paste %AppData%, then open SlayTheSpire2 › steam). Some installs use C:\Users\<you>\AppData\Local\SlayTheSpire2\saves instead — check both.

Can I recover a corrupted Slay the Spire 2 save?

Often yes. Check the save folder for the game’s own backup (a .bak / .old copy) you can rename back into place, and Windows Previous Versions or a clean Steam Cloud copy may hold a good version. Always back up the folder before you try anything.

My save corrupted after a Steam Cloud sync — what do I do?

That’s the most common Slay the Spire 2 case right now. Do not relaunch: turn off Steam Cloud sync for the game, restore your local backup, confirm it loads, then re-enable sync so the clean save uploads instead of the corrupt one.

Why did my Slay the Spire 2 save get corrupted?

Usually a cloud-sync conflict resolved the wrong way, or a crash/power loss while the game was writing the run file. Making a manual copy of the folder each session is the only reliable protection.

Other games

Need another game or a quick backup? Use the Save Location Finder — pick any game to get its exact save path plus a ready-to-run backup command.