In-game pickup line
“???”
Mechanics
What Key Piece 1 does
- Combining it with Key Piece 2 unlocks the golden door in the Chest or Dark Room starting room.
- Holding a key piece improves Angel Room access and gives a small chance for Eternal Hearts.
In a run
Practical note
Take both pieces across Angel encounters if Mega Satan is your target for the run.
Reference
Game data and sources
The item ID, quality and pool listings, icon, game-file tags, and short pickup line come from the extracted Repentance files. This effect explanation is an editorial summary checked against the references below. Repentance+ can differ.
