Base game
- Isaac (Repentance+)
- Isaac (Repentance)
-
Mods (0 • hidden)
- 21 Trinkets
- A Bushel of Burdens & Blessings
- Andromeda
- Ascension
- Bael
- Balatro Jokers
- Baphomet
- Battle Fantasy
- Benevolence
- Benighted Soul
- Beyond
- Birthcake
- Birthcake: Rebaked
- Brown Shapiro's Addons
- Chocolate Mod
- Community Remix
- Curiosity Crate
- D!Edith
- Damnation
- Dark Vaults
- Daydream all Day
- Doki Doki
- Eclipsed
- Elitium
- Ena Mod
- Epiphany
- Fiend Folio
- Foks' Booster Pack
- Fruity Rooms
- Glacier's Laboratory
- Godmode Achieved
- Heaven's Call
- Insane Pain Mod
- Inscryption Card Pack
- Job
- Joseph
- Kicks and Giggles
- Lazy MattPack
- Library Expanded
- Lost and Forgotten
- Malware & Spam
- Martha of Bethany
- Mastema
- Me's Very Rocky Collection
- Minmaxers Anonymous
- More Penny Trinkets
- More Unus Cards
- Neapolitan Pack
- Painted Paths
- PJJ & Niro's Collection
- Pop Pack
- Potato Packs
- Preyn's Collection
- Red Baby
- Repentance Negative
- Repentance Plus
- Reshaken
- Restored Mods
- Revelations
- Reverie
- Reverie: Make Good Omissions
- Road to Enlightenment
- Sacred Dreams
- Samael
- Sewing Machine
- Sweet Halloween
- The Bimbing of AIsaac: Reedged
- The binding of Neuro-sama
- The Forbidden Suits
- The Miles Mod
- The Sheriff
- Virtue Items
- Warp Zone
22 more currently being worked on!
- Add your mod
- To the GuruWiki
▾Table of Contents▾
Book of Madness item
Book of Madness is an active item in Glacier's Laboratory, a mod for The Binding of Isaac.
Description
Cannot appear naturally. Only appears by replacing any newly spawned book item with a 2.5% chance.
While held -3 luck.
Slightly distorts the screen and background music, similar to Wavy Cap.
Automatically consumes A Missing Page and permanently grant its effect.
Upon entering a new room for the first time, acquires corresponding item wisps or locusts from each item in the room, then replaces these items with Missing Page 2.
Upon taking lethal damage, Isaac will consume the item, explodes and drops lots of pickups or items, then revives with half a heart in the same room.
On useTriggers the effects of The Necronomicon and spawns A Missing Page.
Transformations
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| book | Contributes towards the Bookworm transformation. |
| offensive | Can appear for  Tainted Lost. |
| noeden | Unavailable as starting items for  Eden and  Tainted Eden. |
| nocantrip | Not available as card effects during the Cantripped! challenge. |
| nochallenge | Unavailable during challenges. |
| hidden | Cannot be obtained naturally. |
Special synergies
The following special synergies and interactions for Book of Madness have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Book of Virtues | Spawns 6 black wisps that only lasts for current room. |
| --- | The Book of Belial combined with Judas' Birthright |
Effects of  The Necronomicon will be triggered twice.
|
* Note that not all possible synergies and interactions are listed here.
External links
- Download Glacier's Laboratory from the Steam Workshop.
Solar Eclipse 
Lunar Eclipse 
Dad's Key Chain 
Swiss Roll 
Too Many Swiss Rolls 
F.E.V.