The Binding Of Isaac Repentance -01009cd0167e20... May 2026

It looks like you’re referencing what appears to be a debug string, memory address, or corrupted/truncated save ID related to The Binding of Isaac: Repentance — specifically something like 01009CD0167E20... (which resembles a Nintendo Switch title ID or save data hash).

Here is a proper technical write-up regarding the context, structure, and utility of this string within the game's ecosystem. The Binding of Isaac Repentance -01009CD0167E20...

Introduction to The Binding of Isaac: Repentance

"The Binding of Isaac: Repentance" is an indie roguelike video game developed by Nicalis, Inc. and Edmund McMillen. It was released on March 31, 2021, for PC and later for consoles. The game is an enhanced version of "The Binding of Isaac: Rebirth," offering new items, enemies, and game mechanics. It looks like you’re referencing what appears to

• Run Archiving: By extracting this hex string, players can "back up" a specific run-in-progress. If the player dies, they can inject this string back into the save file to restore the run to the exact moment before death (commonly known as "Savescumming").
• Save File Repair: If repentance_savegame.dat becomes corrupted, analyzing the hex header allows for manual repair or identification of the corrupted block.
• Unlock Transfer: Moving this data between computers allows players to transfer their progress (completion marks, achievements, and secrets) without relying solely on Steam Cloud sync.