Terra Codex
// the open codex of terraria
// Bosses · brain-of-cthulhu

Brain of Cthulhu

brain-of-cthulhu

How to summon

spawn rules

Bloody Spine, or break 3 Crimson Hearts.

  • biomeCrimson
  • eraPre-Hardmode

Composite Breakdown · 6 layers

each fragment is its own NPC →
Brain of Cthulhu
Brain of Cthulhu
NPC #266 · Δ0,0
brain
Creeper
Creeper
NPC #267 · Δ-90,-60
creeper (alignment may need tweaking)
Creeper
Creeper
NPC #267 · Δ90,-60
creeper
Creeper
Creeper
NPC #267 · Δ-100,60
creeper
Creeper
Creeper
NPC #267 · Δ100,60
creeper
Creeper
Creeper
NPC #267 · Δ0,-110
creeper

Frequently asked

common questions
How do you summon Brain of Cthulhu? +

Bloody Spine, or break 3 Crimson Hearts.

Nearby in the Codex

browse all →
King Slime
King Slime
Eye of Cthulhu
Eye of Cthulhu
Eater of Worlds
Eater of Worlds
Queen Bee
Queen Bee
Skeletron
Skeletron
Wall of Flesh
Wall of Flesh
◀ eater-of-worlds all bosses queen-bee ▶