Monster Manual

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Monster   Manual
Item icon
Item altar
"Temporary buddy generator"
Table dividing line 1.png
Item ID
5.100.123
Table dividing line 2.png
Recharge Time
Removed in Repentance3 rooms 3 rooms
Added in Repentance6 rooms 6 rooms
Table dividing line 3.png
Collection Grid
Removed in Afterbirth(page 2, column 10, row 2)
Added in Afterbirth(page 1, column 20, row 6)

Monster Manual is an activated item.

Effects[edit | edit source]

When used, a random familiar will be spawned from the following:

  • Added in Repentance Familiars spawned by Monster Manual last for the rest of the floor.
  • Added in Afterbirth † This item belongs to the Bookworm set. Collecting three items from this set will transform Isaac into Bookworm.

Notes[edit | edit source]

  • It can spawn familiars not yet unlocked.
  • If Cube of Meat or Ball of Bandages are spawned and Isaac already has either of those items, the level of these items will increase for the Removed in Repentancecurrent room. Added in Repentancecurrent floor.
  • Using Monster Manual is a good method to unlock achievements related to Super Meat Boy and Super Bandage Girl.
    • Using Monster Manual and enough Batteries, Super Meat Boy and Super Bandage Girl can both be achieved in the same run.
    • If Isaac does not already have the 15►Cube of Meat Cube of Meat or 15►Ball of Bandages Ball of Bandages, Monster Manual can spawn a level 2 Cube of Meat or Ball of Bandages in one use.
  • Fly related items given by Monster Manual do not contribute to the Beelzebub transformation.
  • 15►Mongo Baby Mongo Baby will not copy familiars spawned by Monster Manual.
  • Familiars spawned by Monster Manual cannot be rerolled into other items by 15►D4 D4 or 15►D100 D100.

In-game Footage[edit | edit source]

Gallery[edit | edit source]

  • 3DS The icon of Monster Manual as seen on the lower 3DS screen

Trivia[edit | edit source]

  • In the original The Binding of Isaac, due to a typing error this item was called Monster Manuel. This has been corrected for Rebirth.
    • Added in Repentance Monster Manual may sometimes display the misspelled name when picked up.
  • Monster Manual is a direct reference to Dungeons & Dragons. Its appearance in the game closely resembles the Advanced Dungeons & Dragons First Edition Monster Manual.

Seeds[edit | edit source]

PC HGN1 GBFC (Treasure room adjacent to spawn)

PC A6V2 BD1M (Treasure room adjacent to spawn)

PC RPFQ NXGG (Treasure room adjacent to spawn)

PC Added in Afterbirth PSXL 8WRV (treasure room adjacent to spawn) (both modes)


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