Destroy the Elder Brain is a sub-quest of the quest Confront the Elder Brain in Act Three of Baldur's Gate 3.
 | Spoiler warning: The following content contains unhidden spoilers. Read at your own risk. |
Objectives
- The Netherbrain is too powerful to let live. Destroying it may be the smartest thing to do.
- We destroyed the Netherbrain.
- We chose to dominate the Netherbrain instead of destroying it.
Walkthrough
During Chapter Three, the party briefly ponders what they will do with the Elder Brain once it is confronted. This occurs during a camp event. Any decisions chosen do not lock in the choice from the party.
The true choice on what to do with the Elder Brain occur at the very end of Confront the Elder Brain. Once the Eler Brain, now a Netherbrain, is defeated using Karsus' Compulsion, a cutscene plays where the illithid in the party uses the Netherstones to destroy the Brain. The following choices appear:
- Go ahead. Command the brain to destroy all tadpoles and then itself.
- Dominate the brain. Become the Absolute. Conquer the world.
- Betray the Emperor. Dominate the brain. Become the Absolute.
- Betray Orpheus. Dominate the brain. Become the Absolute.
- Betray Karlach. Dominate the brain. Become the Absolute.
Choose the first option and the Netherbrain is destroyed; it falls into the Chionthar River and explodes. The party manages to safely wash up on the docks, starting the epilogue.