Concepts Hub

3 Body Problem Concepts and World Explained

A guide to the concepts, places, organizations, and story mechanics that define 3 Body Problem.

Series Hub

3 Body Problem Summary

Finale Guide

Ending Explained

Key Concepts

Concept

Sophons

Sophons are proton-sized supercomputers used by the San-Ti to spy on Earth and block scientific progress.

Concept

Dark Forest Theory

Dark Forest Theory argues that civilizations destroy each other because revealing their existence creates existential danger.

Organization

San-Ti

The San-Ti are an alien civilization from a chaotic three-sun system seeking Earth as a stable home.

Episode Timeline

Episode 1

3 Body Problem Episode 1 Recap: Countdown

Episode 2

3 Body Problem Episode 2 Recap: Red Coast

Episode 3

3 Body Problem Episode 3 Recap: Destroyer of Worlds

Episode 4

3 Body Problem Episode 4 Recap: Our Lord

Episode 5

3 Body Problem Episode 5 Recap: Judgment Day

Episode 6

3 Body Problem Episode 6 Recap: The Stars Our Destination

Episode 7

3 Body Problem Episode 7 Recap: Only Advance

Episode 8

3 Body Problem Episode 8 Recap: Wallfacer

Explore More 3 Body Problem Guides

Characters

3 Body Problem Characters Guide

Understand the major characters in 3 Body Problem, how they connect, and why their choices matter to the story.

Concepts

3 Body Problem Concepts and World Explained

A guide to the concepts, places, organizations, and story mechanics that define 3 Body Problem.

Timeline

3 Body Problem Timeline and Episode Guide

Follow the 3 Body Problem story in order, from the opening conflict to the ending and its biggest revelations.