Binding of Isaac: Rebirth Wiki
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(except in Repentance)Locked Door (in Repentance)Library door lockedLibrary door

LibrariesLibraries are rooms that must be opened with a key. Items from the Library item pool can be found within, among other things, such as Cards and/or Runes or even enemies. Libraries have a 5% chance of appearing each floor. Certain Library layouts can only appear after unlocking certain store upgrades from donating to the Donation Machine.

Layouts[ | ]

The following room maps were made using Basement Renovator for cleaner viewing. Items generated in these rooms pull from the Library item pool.

ID Shop Level Weight Contents Image preview
0 0 1.0 Two items side-by-side in the center, and one cobweb each in the bottom left and top right corners. Library 0
1 0 1.0 One item and two Cards. Library 1
2 1 1.0 Two items and one Little Battery. Library 2
3 0 1.0 One item and two random batteries. Library 3
4 3 1.0 Three items, surrounded by four Fire Places. Library 4
5 4 1.0 Five items, one in the center available for free, and four in the corners trapped behind iron/key blocks. Library 5
6 1 1.0 Two items, one each in the top left and bottom right corners, and two urns, one each in the bottom left and top right corners. Library 6
7 4 1.0 Four items, trapped behind iron blocks and spikes. Library 7
8 0 (except in Repentance)
1.0
(in Repentance)
0.25
Four Cards. Library 8
9 2 (except in Repentance)
1.0
(in Repentance)
0.5
Two items, with a Key MasterKey Master in the middle, and two cobwebs adjacent to the latter. Library 9
(except in Rebirth) 10 4 (except in Repentance)
1.0
(in Repentance)
0.5
Five items at the top, all trapped behind iron/key blocks. Library 10
(except in Rebirth) 11 0 (except in Repentance)
1.0
(in Repentance)
0.5
One item, surrounded by MaggotMaggots. Library 11
(except in Rebirth) 12 0 (except in Repentance)
1.0
(in Repentance)
0.25
Four Cards in the middle, next to a cross made out of rocks. Library 12
(except in Rebirth) 13 0 1.0 Two items at the bottom, surrounded by cobwebs, urns, and red Fire Places. Library 13
(except in Rebirth) 14 0 1.0 Two items: one in the middle, next to two Fire Places, and one on the right, trapped behind rocks. Library 14
(except in Rebirth) 15 0 1.0 Closet-sized room with two items.
  • (except in Repentance) Closet-sized room with one item.
Library 15
(in Repentance) 16 0 0.5 Two items, a Bomb Bum, and each corner has a 50% chance to be either a cobweb or a random bomb. Library 16
(in Repentance) 17 0 0.5 Two items and a Wooden Chest. Library 17

Notes[ | ]

  • (except in Repentance) From the outside, the library is identical in appearance to the ShopShop. One of the ways they can be distinguished is if Isaac has a mapping item such as Collectible Spelunker Hat iconSpelunker Hat or Collectible The Compass iconThe Compass. Generally, the library will be closer to the starting room than the Shop.
    • (in Repentance) The library now has its own unique door.
  • Once all items in the Library item pool have been picked up, items from the Treasure Room item pool will appear instead.
  • Libraries are particularly useful for acquiring the Bookworm transformation.
  • (in Repentance)NO!NO! now replaces all activated items inside the Library with passive items, which prevents all Library items from appearing other than Collectible Book of Virtues iconBook of Virtues.

Trivia[ | ]

  • The music that plays in the Library is the same as the one played in ending 14.


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