Brain in a Jar

  Desktop/Mobile-Only Content: This information applies only to the Desktop and Mobile versions of Terraria.

Master Mode-Only Content: This information applies only to Master Mode and Master Mode worlds.

Brain in a Jar

• 

Statistics

Type	Pet summon
Use time	20 (Very fast)
Tooltip	Summons a spider brain 'Pickled and shrunken, this brain can no longer hurt you.'
Rarity	13*
Sell	5
Research	1 required

Grants Buff

Buff	Spider Brain
Buff tooltip	It's crawling around . . . icky

Summons Pet

• Spider Brain
  

Sounds

Use

• Internal Item ID: 4800
• Internal Buff ID: 287
• Internal Projectile ID: 884

The Brain in a Jar is a pet item that can be dropped by Brain of Cthulhu in Master Mode with a 25*1/4 (25%) chance. It summons a miniature version of the Brain of Cthulhu, the Spider Brain.

Trivia

• The Spider Brain slightly resembles the Brain Suckler, which latches onto human heads.
  • Likewise, this pet and the object used to summon it may be a reference to a scene from the movie "The Iron Giant," where the main character is watching a horror movie in which a scientist knocks over a brain in a jar. Upon returning to his lab, the brain is no longer on the floor - two seconds later, the brain, now having developed four legs, two eyes and a mouth, leaps onto the scientists face.
  • That being said, it is also possible, but less likely, that this item is intended as a reference to the arachnotron from the DOOM franchise.
• The item itself may be a reference to the brain in a vat, a scenario in thought experiments which involves placing a disembodied brain in a vat of life-sustaining liquid and connecting it to a supercomputer, allowing the brain to perceive itself to be experiencing reality as if it were in the outside world.

History

 Desktop version

• Desktop 1.4.0.1: Introduced.

 Mobile version

• Mobile 1.4.0.5.0: Introduced.