In-game pickup line
“Double your friends”
Mechanics
What Box of Friends does
- Using it creates extra copies of held familiars until the room ends.
- If Isaac has none, it supplies a temporary Demon Baby instead.
From the game files
Recharge
Standard room-clear recharge. Batteries and other effects can change how quickly it refills.
Achievement #203
How to unlock it
Defeat Ultra Greed as Lilith.
Lilith starts with Box of Friends even before this separate item unlock is earned.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
Save the charge for a room where several familiar copies can keep attacking a durable target.
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. Charge and pickup values shown above also come from the extracted items.xml.
