Baldur’s Gate 3: How to Solve the Brain Puzzle (BG3)

An emotional brain.

Brain Puzzle Baldur's Gate 3
Screenshot by Prima Games.

When you enter the Necrotic Laboratory in the Mind Flayer Colony, you will find a lit-up console that gives you access to a brain puzzle in the center of the room. Compared to other puzzles in Baldur’s Gate 3, the brain puzzle has a unique circuit format that rewards some extra tinkering, and you get some extra Mind Flayer lore by the end.

Necrotic Laboratory Brain Puzzle Solution in BG3

The brain puzzle can be solved by connecting the different parts of the brain in the correct order, which is emotion, speech, reason, and memory. This is the order I used to ensure that none of the nodes intersected, and you can see the completed brain puzzle in the image below.

Brain Puzzle Solution.
Screenshot by Prima Games

As long as you can connect all four parts of the brain, the order doesn’t necessarily matter. It’s all about following a path that makes each node and color independent. Starting with certain colors will certainly make the connections on the puzzle much easier though.

Related: Baldur’s Gate 3: How to Sell All Wares in BG3

Brain Puzzle Solution in Baldur’s Gate 3:

  • Emotion (Yellow): Jump to the bottom node, then move to the left node, and jump to the middle circuit from there.
  • Speech (Blue): Start on the node to the left, then follow the path all the way to the right to the other side.
  • Reason (Purple): Take the path to the right to start, then follow the nodes up to the center circuit that leads to the other reason node.
  • Memory (Green): The path should be set by this point. To make it clear though, use the node to the right and take a sharp left on the two nodes after.

When all of the parts of the brain are connected through the console circuits, the door on the other side of the room will open up. You will find another jarred brain and a Desecrated Relief that you can interact with to learn more about the Mind Flayers.

After exploring the Necrotic Laboratory of the colony, learn how you can find Zevlor in Baldur’s Gate 3.

About the Author

Daniel Wenerowicz

Dan has been writing gaming guides and news as a staff writer and freelancer since he graduated from Westfield State University in 2020. You can find him covering the FPS and Battle Royale space at Prima Games.