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Font TeamMeat D.pngFont TeamMeat 1.png
Item icon
Item altar
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Table dividing line 2.png

4 rooms 4 rooms
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(page 4, column 11, row 6)

D1 Defeat Ultra Greedier as 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 Blank Card Blank Card and Placebo Placebo.
  • Jera 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 Mom's Purse Mom's Purse/Belly Button Belly Button or Smelter Smelter.
  • It is possible to duplicate shop pickups that have not been purchased yet.
  • With 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)

Isaac Unlocks Isaac Unlocks Isaac Unlocks
Mom's KnifeThe D20Isaac's HeadIsaac's TearsMissing PosterLost Baby Fart BabyLil' ChestCry BabyBuddy BabyI RULE! D InfinityD1
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