Place it in the save directory, replacing the existing file.
If Steam Cloud is active, it will likely overwrite your new save with your old one as soon as you launch the game. and right-click The Binding of Isaac: Rebirth Properties Uncheck the box for "Keep game's saves in the Steam Cloud" (Optional) In your options.ini file (found in the Documents folder), ensure SteamCloud=0 3. Place the New Save File Download your chosen file (usually named something like persistentgamedata1.dat The Binding Of Isaac Repentance 100 Save File Download
By default, this is located at: C:\Users\[username]\Documents\My Games\Binding of Isaac Repentance. Place it in the save directory, replacing the existing file
Before you rush to Nexus Mods or a random Reddit DM, consider the grim reality of the "100% Save File." Place it in the save directory