Launch the game
Re-enable Steam Cloud
After save is confirmed working, re-enable Cloud and choose “Upload to Steam Cloud” when prompted.
Binding of Isaac uses a binary save format with extensions:
In Repentance, these files are stored separately from the Rebirth/Afterbirth save structure.
It covers the rationale, step-by-step procedures for different operating systems, safety considerations, and troubleshooting. binding of isaac repentance 100 save file install
Use this if you are asking for help or providing a quick tip on a message board.
Subject: [Help] Trouble installing 100% save file for Repentance
Body: Hey everyone,
I recently downloaded a 100% save file for Repentance to mess around with unlocked items, but I’m having trouble getting the game to recognize it.
Here is what I’ve done so far:
However, when I launch the game, it still shows my old save or asks me to start a new game. Do I need to verify file integrity or is there a specific file attribute I need to change?
Thanks for the help!
The Isaac community is split.
The Purists argue: The entire point of Binding of Isaac is the slow, painful grind. Unlocking The Lost without a guide, dying 100 times to unlock The Forgotten, beating Delirium as Jacob & Esau – these are rites of passage. Using a save file robs you of the "earned" dopamine.
The Pragmatists argue: After losing a 300-hour save to a hard drive crash, or swapping to a new PC, re-grinding "It's the Key" (beat the game without picking up hearts) is not fun; it is torture. Furthermore, many players just want to experiment with game-breaking Tainted Cain recipes or play co-op with friends without restrictions.
My take: Use the 100% save file on Save Slot 2 or 3. Keep your original progress in Slot 1. This way, you have a "sandbox" god-mode file for fun, and a "legacy" file for honest progress. Launch the game
| Problem | Likely Cause | Solution |
|---------|--------------|----------|
| Save shows 0% after launch | Cloud sync overwrote file | Disable Cloud, delete .dat, recopy, launch offline once |
| “Corrupted save data” error | Version mismatch between save file and game patch | Ensure save matches Repentance v1.7.9+; downgrade save with online tool (rare) |
| Achievements not unlocking on Steam | Game checks for progression flags | Launch game, perform any trivial action (e.g., pick up a coin), exit; Steam sync will update |
| Tainted characters missing | Save file from pre-Repentance version | Need a full Repentance 100% file, not Afterbirth+ |
| Save slot selector shows empty | Incorrect filename (e.g., persistentgamedata1.dat without rep_) | Rename to rep_persistentgamedataX.dat |