There are tons of unique and difficult puzzles you’ll stumble upon during your playthrough ofBaldur’s Gate 3. One puzzle that I ended up struggling with was the Necrotic Laboratory puzzle. You’ll need to complete this puzzle to open up a door for special rewards. Let’s explain how to solve the Necrotic Laboratory puzzle inBaldur’s Gate 3.
Baldur’s Gate 3: Necrotic Laboratory brain puzzle
On your way to defeat General Ketheric Thorm, you find yourself in a Mind Flayer lair with multiple rooms to explore. One room holds a complicated puzzle with brain parts and nodes. How you can solve the Necrotic Laboratory puzzle inBaldur’s Gate 3is byconnecting each of the four brain parts to their matching pair on the other side with connecting nodes.
Still unsure of how this works? Let me explain more in detail. The four brains areEmotion, Memory, Speech, and Reason. There are a string of interconnected nodes that follow through to the other side with matching brains. Essentially,connect one brain type at a time. It’s easier to do this when you realize each brain type corresponds to a color.

While you’re connected to the machine, start with one brain. Select it with left-click, then click the node attached to it. Then you just click the next node, and the next, and so on. There is aspecific pathway needed for each brainto connect individually to their matching brain. If you’re still struggling to figure out the pattern, view the image above for the answer.
Once that’s complete, the door ahead will open, giving you more information on the Mind Flayers. If Gale is in your party, he’ll receive Inspiration for completing this brainy puzzle. Also, this area has some interesting rewards in store! ensure to take them from the skeleton’s body.

Baldur’s Gate 3is available onSteam.
Anyka Pettigrew
Anyka Pettigrew has been a Staff Writer for PC Invasion since November 2023 and a Contributing Writer since February 2023. She is a Canadian graduate of a Bachelor of Arts degree who has been writing in games journalism for four years. Anyka is an avid guides writer but also enjoys writing anything from news pieces, to reviews, and even opinion pieces. Having a never-ending passion for video games for as long as she can remember got her into a plethora of genres like action adventure, RPGs, horror, survival etc. Some of her favorite franchises are God of War, Persona, The Last of Us, Zelda, and Resident Evil. She also enjoys reading fantasy and sci-fi books, as well as drawing digital art. Anyka also regularly listens to podcasts on gaming news from ‘Kinda Funny Games’, and ‘Play, Watch, Listen’.