The Necronomicon

"Mass room damage"

Item ID
5.100.35

Recharge Time

6 rooms

4 rooms

Item Pool

Collection Grid

(page 1, column 5, row 4)

(page 1, column 15, row 2)

Unlock Method

Use XIII - Death 4 times

The Necronomicon is an unlockable activated item.

Effect[edit | edit source]

Deals 40 damage to every enemy in the room.
This item belongs to the Bookworm set. Collecting three items from this set will transform Isaac into Bookworm.

Many collectibles will produce effects similar to the Necronomicon, such as depleting a Black Heart or blocking projectiles with Dry Baby.
The Necronomicon deals a considerable amount of damage to bosses that have multiple damageable parts, e.g. Larry Jr. and The Hollow.
This item also does high enough damage to instantly kill most non-boss enemies.

The Necronomicon is a fictional grimoire appearing in the works of horror writer H.P. Lovecraft.
- A Missing Page and Missing Page 2 are both references to missing pages of the Necronomicon appearing in Evil Dead.
The book seems to be bound in human skin, which explains the face on its cover.
- The face on the cover is another reference to The Evil Dead franchise, which has the same face on its Necronomicon.