Dice Room

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Found behind doors which require two keys to open, Dice Rooms randomize many aspects of the game, depending on the number imprinted on the very large red die embedded in the floor. Stepping onto the center of the die face activates its effect. The effect of a dice room may only be used once, but multiple dice rooms can be used on a single run. A Dice Room has a chance to appear in place of a Sacrifice Room if Isaac is carrying 2 keys or more.

Dice Rooms also commonly contain chests and other consumables. Rarely, they contain enemies or items from the Treasure Room item pool.


Dice room example.png

The dice numbers and effects are:

  • 1 pip - Rerolls Isaac's currently held collectibles into items from the Treasure Room item pool, like the D4 D4 would. Activated collectibles can be changed into passive ones, but passive collectibles cannot turn into activated ones.
    • Added in Afterbirth † Re-rolls each of Isaac's passive items into a random item from the specific item pool where it was acquired.
  • 2 pips - Rerolls all pickups in the room itself like the D20 D20 would.
  • 3 pips - Rerolls all pickups and trinkets for the entire floor. This includes shop pickups. Does not reroll pickups or trinkets in the Devil Room, Angel Room, Black Market, or Crawl Space.
  • 4 pips - Rerolls any item pedestals on the floor like The D6 The D6 would. Does not reroll item pedestals in the Devil Room, Angel Room, Shop, Library, Black Market, or Crawl Space.
    • Added in Afterbirth † Item pedestals located in the Shop and the Library are rerolled.
  • 5 pips - Rerolls and restarts the current floor, which is the same effect as Forget Me Now Forget Me Now.
  • 6 pips - Combines the effects of the 1, 3, and 4-pip rooms. (Rerolls all held items, pickups, trinkets, and pedestal items like the D100 D100.)


  • It is possible to re-roll a floor into another that has a 5-pip Dice Room. Getting a 5-pip dice room in The Womb The Womb/Utero Utero II can allow the player to defeat Mom's Heart (or It Lives) multiple times in one run. This can be used to quickly gain progress tied to the number of Mom's Heart kills.
  • It is possible to unlock Samson by finishing the first floor and entering a 5-pip Dice Room.
  • A 5-pip dice room on an XL floor sends Isaac to the beginning of the chapter.
  • When shop pickups are re-rolled via the 3 or 6-pip room, the original prices will remain in place.
  • 3 or 6-pips Dice Rooms can reroll chests in Challenge Room or Boss Challenge Room into a collectible. And since those rooms detect whether a chest is open or an item picked up, there won't be any monsters.
  • 3-pip room can re-roll shop consumables into items for the price of the consumable.
    • Using items such as The D6 in the room without buying the item can cause the item to revert to a consumable.
  • There is a small chance that 1- and 6-pip rooms will not reroll every item Isaac has in his possession.
  • Added in Afterbirth Dice Rooms don't re-roll starter challenge items or remove blindfold on challenges.
  • Added in Afterbirth † Dice Rooms have a small marker indicating the effect that will be activated when the room is used. This was inspired by this Steam Workshop mod by Wofsauge.



 PC  8ZCP Y8KK (1-pip room, Necropolis I, far northeast room. Good late game randomizer.)

 PC  R4V7 603Q (2-pip room on Necropolis II)

 PC  8Q88 CP4J (3-pip room on third floor)

 PC  Q3TZ WQLG (Three 5-pip rooms. Two on the second floor, one in Utero 2. If played with The D6, can become Lord of the Flies and Guppy. Very good run.)

 PC  KTEJ KLPP (5-pip room adjacent to spawn)

 PC  HA1A P0SF (6-pip room on second floor)


Bug Bug! The 1-pip room may reroll your active item into a "passive" item. The 1-pip room always empties your active item slot. However 1-pip room may fail to find a replacement item which results in Isaac still having the collectible. This is because the D4 will try 3 times to get a non-active item from the item pool before giving up replacing the item.
Bug Bug! The 1-pip room will reroll your secondary active collectible without emptying the slot. This means you will keep the active ability but lose some passive abilities. For example, you will lose Added in AfterbirthMom's Box Mom's Box passive of doubling trinkets but you keep the speed boost from A Pony A Pony.

SmallIsaac.png Rooms SmallIsaac.png

Unlocked Added in Afterbirth Added in Afterbirth †
Boss Room Icon.png
Boss Room
Mini-Boss Room Icon.png
Mini-Boss Room
Curse Room Icon.png
Curse Room
Sacrifice Room Icon.png
Sacrifice Room
Room 1x1 small.png
Room 1x1.png
Grave Room
Locked Treasure Room Icon.png
Treasure Room
Shop Icon.png
Library Icon.png
Slotted Arcade Icon.png
Barred Challenge Room Icon.png
Challenge Room
Boss Challenge Room Icon.png
Boss Challenge Room
Double-locked Vault Icon.png
Dice Room Icon.png
Dice Room
Double-boarded Bedroom Icon.png Bedroom2 Icon.png
Hidden Secret Room Icon.png
Secret Room
Super Secret Room Icon.png
Super Secret Room
Super Secret Room Icon.png
Crawl Space
Super Secret Room Icon.png
Black Market
Super Secret Room Icon.png
Post-boss Added in Afterbirth
Devil Room Icon.png
Devil Room
Angel Room Icon.png
Angel Room
Super Secret Room Icon.png
Boss Rush
Super Secret Room Icon.png
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