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Removed in RepentanceItem icon
Added in RepentanceItem icon
Item altar
"What will it be?"
Table dividing line 1.png
Item ID
Table dividing line 2.png
Recharge Time
4 rooms 4 rooms
Table dividing line 3.png
Collection Grid
Removed in Repentance(page 4, column 11, row 6)
Added in Repentance(page 4, column 12, row 6)
Unlock Method
D1 Defeat Ultra Greedier as Isaac Isaac
Added in Afterbirth †

D1 is an unlockable activated item added in The Binding of Isaac: Afterbirth †.

Effect[edit | edit source]

Notes[edit | edit source]

  • By dropping a card, rune, or pill in a room with no other pickups, then using D1, this item can function similarly to 15►Blank Card Blank Card, 15►Placebo Placebo, and Added in Repentance15►Clear Rune Clear Rune.
  • Rune of Jera Rune of Jera can not be duplicated.
  • Mimic Chests will not be duplicated.
  • A normal Chest may be duplicated into a Red Chest or a Mimic Chest.
  • Opened chests will be duplicated into an unopened copy.
  • A duplicated trinket is mostly useless, as you cannot pick up two of the same trinket even with 15►Mom's Purse Mom's Purse/15►Belly Button Belly Button or 15►Smelter Smelter.
  • It is possible to duplicate shop pickups that have not been purchased yet.
  • With 15►Car Battery Car Battery, it is possible to infinitely generate Lil' Batteries from a single Lil' Battery.
  • In combination with a 48 Hour Energy and Paper Clip Paper Clip, the initial Locked Chests on The Chest The Chest can be infinitely duplicated and opened.
  • In Greed mode, if a Lil' Battery appears in the Shop and a 2 of Diamonds 2 of Diamonds is acquired, infinite money can be gained by duplicating the Two of Diamonds.

In-game Footage[edit | edit source]

Trivia[edit | edit source]

  • D1 is the only dice item that doesn't re-roll anything.
    • As such, its description, in certain cases, can be ironic, as the outcome is entirely predictable if there's only one pickup. This makes sense because the dice only has one pip on each of its 6 sides.

Seeds[edit | edit source]

PC Normal and hard modes only 34HF 9E4F (Treasure Room adjacent to spawn)

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