Focus on

Cell Duplication > Organ Drop Rate > Organ Quality

Secondary

Brain > Base Damage > HP > Critical

Use this room often to review your build.

Aim for rare (blue) or legendary (yellow) quality.
The list is arranged from top to bottom, left to right.
Abbreviation: 2V = 2 vessels

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💥💥💥 BRAIN 1 is your main melee DPS source. 💥💥💥

• Spine of the Jackal
  
• Tentacle of the Coral
  
• Nerve of the Boxer
  
• Tentacle of the Starfish (2V)
  
• Nerve of the Boxer
  
• Nerve of the Boxer
  
• Belly of the Fire Lizard (MOAR)
  
• Belly of the Fire Lizard (FIRE!!!)
  
• Lung of the Narwhal
  
• Lung of the Narwhal
  
• Belly of the Blood Coral
  
• Belly of the Blood Coral

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🔥🔥🔥 BRAIN 2 focuses on FIRE!!! 🔥🔥🔥

The effect moves with you.

• Intestine of the Slimme
  
• Wing of the Giant Bat
  
• Lung of the Narwhal
  
• Belly of the Fire Lizard (2V)
  
• Intestine of the Slimme
  
• Intestine of the Seedsnipe
  
• Belly of the Fire Lizard
  
• Belly of the Fire Lizard
  
• Lung of the Narwhal
  
• Lung of the Narwhal
  
• Belly of the Schrodiner*
  
• Belly of the Schrodiner*

*you can replace these with Belly of the Fire Lizard for more firepower!

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🎇🎇🎇 BRAIN 3 focuses on LASERS!!! 🎇🎇🎇

The effect moves with you.

• Spine of the White Fox
  
• Gland of the Monkfish
  
• Cochlea of the Cat (3V)
  
• Tentacle of the Mushroom
  
• Tentacle of the Mushroom
  
• Limb of the Germ Rat
  
• Retina of the Raven
  
• Retina of the Raven
  
• Retina of the Raven
  
• Tentacle of the Coral
  
• Tentacle of the Coral
  
• Tentacle of the Coral

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🐌🐌🐌 BRAIN 4 specializes in slowing incoming threats 🐌🐌🐌

The effect moves with you.

• Lung of the Narwhal
  
• Belly of the Yeti
  
• Intestine of the Camel
  
• Belly of the Yeti
  
• Intestine of the Camel
  
• Belly of the Yeti
  
• Intestine of the Slime
  
• Belly of the Yeti (2V)
  
• Intestine of the Slime
  
• Intestine of the Slime
  
• Belly of the Yeti
  
• Belly of the Yeti

Note: I've replaced both Belly of the Schrodiners in BRAIN 2 with Belly of the Fire Lizards.

Given the complexity of choices involved, this is merely a guide to help you understand HOW to link organs. Feel free to make any desired adjustments.