The Silver Key is an unlockable active item in Benighted Soul, a mod for The Binding of Isaac.

Can only be charged by cleaning rooms.
Can be fully charged twice.

On use Records the current room (only a few can be recorded) and game timer.

If recorded, try reset the closest room into recorded one, make game timer become recorded one, and reset the record.

In a new level, all rooms with the last-recorded type will be rerolled into normal rooms.

Rooms can not be reset:
• Unbefitting shape or doors position.
• Starting Room.
• Boss Room.
• Gree Exit.
• Mirror Room (Quest for Knife Pieces).
• Mine Shaft Entrance (Quest for Knife Pieces).

These room types can be recorded:
• Miniboss Room.
• Treasure Room.
• Planetarium.
• Library.
• Shop.
• Curse Room.
• Sacrifice Room.
• Arcade Room.
• Chest Room.
• Dice Room.
• Isaac's Bedroom.
• Barren.
• Secret Room.
• Super Secret Room.
• Ultra Secret Room.
• Devil Room (with Judas' Birthright).
• Angel Room (with Book of Virtues).

Earn all completion marks on Hard Mode as Benighted Lost.

The Silver Key can be found in the following item pools:

The following tags are applied to this item:

The following special synergies and interactions for The Silver Key have been documented.

* Note that not all possible synergies and interactions are listed here.

• Download Benighted Soul from the Steam Workshop.