Library



Libraries are rooms that must be opened with a key. They can contain at least one book, card or rune in them. The books are free to pick up.

The list of books that can be found in the library can be found here.

A Library can take one of the following layouts:

 * 2 Books
 * 1 Book and a random card
 * 1 Book and 2 random cards
 * 2 Books and a little battery
 * 1 Book and 2 little batteries
 * 3 Books
 * 1 Book, with 4 more Books locked behind key blocks
 * 5 Books, each behind key blocks
 * 4 Books blocked by spikes
 * 4 random cards or runes
 * 2 Books and a key master

Trivia

 * The music that plays in the Library is the same as the one played in ending 14.
 * This Isaac seed has 4 libraries up to depths 2 - EY4S A906