The Dark Forest

Four Wallfacers are chosen and given vast resources to pursue strategies they need explain to no one. Three are famous leaders and scientists. The fourth, Luo Ji, is a lazy, self-absorbed sociologist who has no idea why he was selected, and who at first uses his position to live comfortably. Gradually he realizes that a conversation he once had with a stranger may hold the key to the universe itself.

This is science fiction on a grand scale. The plot spans centuries, with characters entering hibernation and waking in a future transformed by technology, and the ideas are thrilling: a cold, strategic theory of how civilizations behave toward one another, and a sequence involving a small alien probe that is among the most memorable set pieces in modern science fiction. The characters are less developed than the concepts, and the pacing can be uneven.

Many readers think it surpasses the first book, and its central idea has entered popular culture. Read The Three-Body Problem first; Death's End completes the trilogy. Joel Martinsen's translation is clear and readable throughout. About 528 pages in the Tor paperback.