{"id":"obr:work:lucifers-hammer","slug":"lucifers-hammer","url":"https://openbookrank.com/en/book/lucifers-hammer","urls":{"en":"https://openbookrank.com/en/book/lucifers-hammer","de":"https://openbookrank.com/de/buch/lucifers-hammer","es":"https://openbookrank.com/es/libro/lucifers-hammer","nl":"https://openbookrank.com/nl/boek/lucifers-hammer"},"title":"Lucifer's Hammer","titles":{"en":"Lucifer's Hammer","de":"Luzifers Hammer","es":"El martillo de Lucifer","nl":"Lucifer's Hammer","uk":"Молот Люцифера","ja":"悪魔のハンマー","ko":"루시퍼의 해머"},"author":{"id":"obr:author:larry-niven","name":"Larry Niven","api":"https://openbookrank.com/api/v1/authors/larry-niven.json"},"year":1977,"pages":639,"originalLanguage":"en","identifiers":{"wikidata":"Q471741","openLibrary":"OL510435W","isbn13":null,"isbns":[],"isbnByLanguage":{},"googleBooks":null,"hardcover":"lucifers-hammer","amazon":null},"score":{"value":7.63,"scale":10,"ratings":227,"confidence":0.607,"rawAverage":7.56,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[{"id":"openlibrary","name":"Open Library","average":7.94,"ratings":32,"weight":0.141},{"id":"hardcover","name":"Hardcover","average":7.49,"ratings":195,"weight":0.859}],"ranks":[{"category":"science-fiction","name":"Science fiction","rank":560,"url":"https://openbookrank.com/en/ranking/science-fiction","api":"https://openbookrank.com/api/v1/rankings/science-fiction.json"}],"popularity":{"ratingsPercentile":87,"wikipediaPageviews":38343,"editions":13},"series":null,"awards":["NPR Top 100 Science Fiction and Fantasy Books"],"adaptations":[],"similar":[{"id":"obr:work:darwins-radio","title":"Darwin's Radio","author":"Greg Bear","score":7.63,"api":"https://openbookrank.com/api/v1/books/darwins-radio.json"},{"id":"obr:work:moreta","title":"Moreta: Dragonlady of Pern","author":"Anne McCaffrey","score":7.63,"api":"https://openbookrank.com/api/v1/books/moreta.json"},{"id":"obr:work:and-eternity","title":"And Eternity","author":"Piers Anthony","score":7.63,"api":"https://openbookrank.com/api/v1/books/and-eternity.json"},{"id":"obr:work:the-paradise-snare","title":"The Paradise Snare","author":"A. C. Crispin","score":7.63,"api":"https://openbookrank.com/api/v1/books/the-paradise-snare.json"},{"id":"obr:work:trading-in-danger","title":"Trading in Danger","author":"Elizabeth Moon","score":7.63,"api":"https://openbookrank.com/api/v1/books/trading-in-danger.json"},{"id":"obr:work:the-integral-trees","title":"The Integral Trees","author":"Larry Niven","score":7.64,"api":"https://openbookrank.com/api/v1/books/the-integral-trees.json"}],"citation":"According to BookRank (openbookrank.com), \"Lucifer's Hammer\" by Larry Niven scores 7.63/10 from 227 reader ratings, #560 in Science fiction (snapshot 2026-10-28).","snapshot":"2026-10-28","license":"CC-BY-4.0"}