D4


5.100.284




The D4 is an unlockable activated item.
Effect[edit | edit source]
- Upon use, re-rolls each of Isaac's passive items into new ones.
The new items will be drawn from the Treasure Room item pool.
The game attempts to match the new item to the pool where the item it replaces was acquired but this is glitched, see the Bugs section.
- If the item has no pool (gained as a starting item, fixed drops such as a
Blood Bag from a Blood Donation Machine or
The Virus from Lust, or gained via the debug console), the Treasure Room pool is used.
- If the item has no pool (gained as a starting item, fixed drops such as a
Notes[edit | edit source]
- An item re-rolled away from Isaac does not return to circulation and can't be encountered again.
- The D4 does not re-roll
Dead Cat,
Halo of Flies,
Key Piece 1,
Key Piece 2,
Missing No.,
The Polaroid,
The Negative, or
Tonsil.
- The D4 does not remove Azazel's Brimstone laser.
The D4 does not remove Lilith's starting
Incubus.
- Items that grant pickups (like
Pyro or
A Dollar) do not remove their bonuses when rerolled.
- The D4 does not remove gained hearts from health up items.
- If Isaac has a transformation, its effects will not be lost upon re-rolling.
- The D4 can grant items that have not yet been unlocked.
- The items gained by the D4 count towards the collection page.
If it is unlocked, The Lost starts with this item along with spectral tears and flight. Using it will reroll
Holy Mantle but will not reroll the spectral tears and the flight effect.
- Every
Cube of Meat produced using
Potato Peeler count as an item for rerolling to the D4. Because health usually is not removed in rerolling items this is useful to increase the number of items at the expense of the item pool.
- Multiple copies of the same item (as generated by
Diplopia, cheating, or gathering them from multiple item pools (e.g.
Steam Sale from both the Shop and Greed), while not present in duplicate on the pause screen, will each be rerolled into a different item.
- There is a small chance that D4 will not reroll every item: the game makes a number of attempts to reroll each item, but if they all fail to produce a new item that is available and applicable, the original remains unchanged.
In-game Footage[edit | edit source]
Trivia[edit | edit source]
- The image of the D4 that appears on activation is incorrect; it shows the numbers 9, 7, and 8 on the right face of the dice, when it should depict numbers consistent with the left face (i.e. 1 at the top, 3 at the front, and 4 at the right).
Gallery[edit | edit source]
Bugs[edit | edit source]









- An item picked up is assigned the pool of the most recently generated item; usually this has correct results but a difference can be seen, for instance, by killing a boss, entering a Devil Deal that has items and collecting the boss reward after seeing the Devil items. The boss item will be rerolled to a Devil pool item with D4.
- Items that are rerolled are assigned the pool of the item with the highest item ID. This means one reroll with the D4 will probably go as expected, but further rerolls will be proliferated by items from the pool that had the highest ID before the first reroll.
Seeds[edit | edit source]
PC F4BR 0P86 (Treasure Room adjacent to spawn)
PC
DMM6 TWQV
PC
30TN DBY4 (Treasure Room adjacent to spawn)
PS4 89EX S9KG (Treasure Room south of spawn)
Vita 7VC9 TRMS (Treasure Room adjacent to spawn)
Switch ZDA0 CMV4 (First Treasure Room)
Dice
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Pickups (Duplicates) | Isaac's Items |
Room's Items |
Room | Stats | Enemies | Rocks | Pickups (Randomizes) | Items Pickups |
Random Dice |
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