Guides: Isaac Repentance+ save files explained
Short, sourced answers to the questions people ask about Isaac save files. Every guide ends with links to the sources it relies on.
Where is the Binding of Isaac: Repentance+ save file? All pathsExact folders for Repentance+ saves on Windows, in Steam Cloud, on Steam Deck and Linux through Proton, which copy the game actually uses, and where the backups are.2026-09-05Steam Cloud and your Isaac save: replacing a file without losing itHow Steam Cloud syncs Repentance+ saves, why a replaced file comes back, the official Nicalis procedure, the SteamCloud=0 alternative and what to click in the Cloud Conflict window.2026-09-05How to install an edited Isaac save file and sync Steam achievementsBack up, find the active file, replace it with the game closed, handle Steam Cloud, then press Alt+F2 in Stats → Secrets. Plus the conditions that keep achievements locked.2026-09-05Dead God in Repentance+: what it means and how to get a Dead God save fileDead God is achievement 637: every other achievement plus every item. The four Repentance+ achievements, why the online ones matter, completion marks and Death Certificate, and how to generate the file in the browser.2026-09-05Moving a save between Repentance and Repentance+Repentance+ imports your Repentance save once, at first launch. How to transfer manually (rep_ to rep+), why the reverse does not work, what REPENTOGON’s importer does, and why console saves cannot move to PC.2026-09-05Isaac save file gone or reset: how to restore it from backupsRepentance+ keeps dated copies in save_backups. How to pick one, rename it, put it in the active folder and stop Steam Cloud from undoing it. Plus the other edition trap and the Alt+F2 fallback.2026-09-05Inside persistentgamedata.dat: how the Isaac save file is structuredHeader ISAACNGSAVE09R, eleven chunks from achievements to bestiary, the checksum the game verifies, why Repentance+ files have 642 achievement entries and the 64 KB cloud limit.2026-09-05