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This is a guide on how to get to the Necrotic Laboratory in the Mind Flayer Colony and solve its puzzle in Baldur's Gate 3 (BG3). Learn about the Necrotic Laboratory puzzle solution, as well as explore the nearby interface that uses humanoid brains (Minds).
List of Contents
Journal Entry | |
---|---|
Defeat Ketheric Thorm | |
Recommended Level | Lv. 8 |
Rewards | • Blade of the Oppressed • Githzerai Mind Barrier |
Location | |
Mind Flayer Colony X: 716 Y: -91 |
|
Puzzle Solution Top View |
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Puzzle Solution Side View |
The brain puzzle can be redone at any time by interacting with the console.
Next to the central room of the laboratory is a Brain Puzzle that is solved using nodes to connect organs of matching color. The rules for completing the puzzle is a follows:
Select a node and then select an organ to fill the connection between them with the organ's color. Two or more colors cannot connect to each other!
Solving this puzzle will reveal the Desecrated Relief behind the large door. The rare Blade of Oppressed Souls (which deals Psychic Damage) and a Waking Mind brain jar can also be found at the side.
Talking to the Slack-Skinned Head with the Waking Mind on the Mind-Archive Interface will give you an Illithid dialogue option to purge her mind.
Doing so will grant you the Githzerai Mind Barrier, a permanent condition that gives Advantage to Intelligence Saving Throws.
Gaining access to the Necrotic Laboratory means gaining access to the Mind Flayer Colony.
The colony is part of Ketheric Thorm's boss fight in Act 2. You will have to enter the colony through the Hollow Tower hole right after Ketheric's first phase.
Once inside the colony, the Necrotic Laboratory at the southwest side of the map. It can be accessed by going at the end of the first hallway, or going into the next room after the Morgue.
Be prepared to fight as you will encounter Zombies, Winged Horrors, and Death Shepherds within the laboratory.
It is a good idea to prioritize the Death Shepherds when they get near you at the start of battle since they will prioritize reviving their dead allies.
Undead enemies are weak to Radiant Damage. Having a Cleric or a Paladin would be a good idea in this situation!
Mind-Archive Location |
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Necrotic Library (Mind Flayer Colony) X: 695, Y: -116 |
You can find the Mind-Archive Interface at the bottom-left of the laboratory. Use Jump or a similar action to cross the gap, then interact with the device.
The interface allows you to insert a green brain jar containing a Mind that communicates through the Slack-Skinned Head. You can use any jar you find throughout the colony (and even the ones you took from the Nautiloid at the beginning of the game.)
Each mind will have its own unique dialogue options. You will want to look out for the Waking Mind found behind the brain puzzle for the option to get a permanent buff to your Intelligence Saving Throws.
All Prologue Side Quests | |
---|---|
How to Free the Intellect Devourer | How to Free Shadowheart |
The Risen Road Quests | |
---|---|
Find the Missing Shipment | How to Rescue the Grand Duke |
Rescue the Trapped Man | How to Free Oskar Fevras |
Goblin Camp Quests | |
---|---|
How to Get Volo's Ersatz Eye | Defiled Temple Puzzle |
Find the Nightsong | Ask the Goblin Priestess for Help |
Mountain Pass Quests | ||
---|---|---|
Steal a Githyanki Egg | How to Beat Gremishkas | How to Access Guardian of Faith Room |
Dawnmaster Puzzle Guide | Where to Find the Githyanki Creche | - |
This section is currently under construction. Check back later for updates!
Gauntlet of Shar Quests | |
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Gauntlet of Shar: All Trials and Umbral Gems | Kill Raphael's Old Enemy |
Mind Flayer Colony Quests |
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How to Solve the Necrotic Laboratory |
Rivington Quests | ||
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Investigate the Suspicious Toys | Solve the Open Hand Temple Murders | Find the Missing Letters |
How to Get to Wyrm's Rock Fortress | How to Find Dribbles the Clown | - |
Lower City Quests | ||
---|---|---|
How to Get to the House of Hope | How to Get to Cazador's Palace | Rescue Orin's Victim |
Aid the Underduke | How to Get to the House of Grief | Investigate the Murders |
How to Solve the Necrotic Laboratory and Location
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