{"id":"obr:work:sign-of-the-unicorn","slug":"sign-of-the-unicorn","url":"https://openbookrank.com/en/book/sign-of-the-unicorn","urls":{"en":"https://openbookrank.com/en/book/sign-of-the-unicorn","pl":"https://openbookrank.com/pl/ksiazka/sign-of-the-unicorn","de":"https://openbookrank.com/de/buch/sign-of-the-unicorn","es":"https://openbookrank.com/es/libro/sign-of-the-unicorn","fr":"https://openbookrank.com/fr/livre/sign-of-the-unicorn","it":"https://openbookrank.com/it/libro/sign-of-the-unicorn"},"title":"Sign of the Unicorn","titles":{"en":"Sign of the Unicorn","pl":"Znak Jednorożca","de":"Im Zeichen des Einhorns","es":"El signo del unicornio","fr":"Le Signe de la Licorne","it":"Il segno dell'unicorno","nl":"Het ware Amber","sv":"Enhörningens tecken","uk":"Знак Єдинорога","ko":"유니콘의 의미"},"author":{"id":"obr:author:roger-zelazny","name":"Roger Zelazny","api":"https://openbookrank.com/api/v1/authors/roger-zelazny.json"},"year":1975,"pages":192,"originalLanguage":"en","identifiers":{"wikidata":"Q2996937","openLibrary":"OL13989W","isbn13":"9788087364956","isbns":["9788087364956"],"isbnByLanguage":{"cs":"9788087364956"},"googleBooks":null,"hardcover":"sign-of-the-unicorn","amazon":{"en":"8087364953"}},"score":{"value":7.89,"scale":10,"ratings":159,"confidence":0.52,"rawAverage":7.83,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[{"id":"openlibrary","name":"Open Library","average":7.75,"ratings":16,"weight":0.101},{"id":"hardcover","name":"Hardcover","average":7.84,"ratings":143,"weight":0.899}],"ranks":[{"category":"science-fiction","name":"Science fiction","rank":300,"url":"https://openbookrank.com/en/ranking/science-fiction","api":"https://openbookrank.com/api/v1/rankings/science-fiction.json"},{"category":"fantasy","name":"Fantasy","rank":862,"url":"https://openbookrank.com/en/ranking/fantasy","api":"https://openbookrank.com/api/v1/rankings/fantasy.json"}],"popularity":{"ratingsPercentile":83,"wikipediaPageviews":5509,"editions":19},"series":{"id":"obr:series:the-chronicles-of-amber","slug":"the-chronicles-of-amber","title":"The Chronicles of Amber","position":3,"volumes":10,"api":"https://openbookrank.com/api/v1/series/the-chronicles-of-amber.json"},"awards":[],"adaptations":[],"similar":[{"id":"obr:work:dirk-gentlys-holistic-detective-agency","title":"Dirk Gently's Holistic Detective Agency","author":"Douglas Adams","score":7.88,"api":"https://openbookrank.com/api/v1/books/dirk-gentlys-holistic-detective-agency.json"},{"id":"obr:work:shadow-of-a-dark-queen","title":"Shadow of a Dark Queen","author":"Raymond E. Feist","score":7.88,"api":"https://openbookrank.com/api/v1/books/shadow-of-a-dark-queen.json"},{"id":"obr:work:dragonsdawn","title":"Dragonsdawn","author":"Anne McCaffrey","score":7.86,"api":"https://openbookrank.com/api/v1/books/dragonsdawn.json"},{"id":"obr:work:for-love-of-evil","title":"For Love of Evil","author":"Piers Anthony","score":7.86,"api":"https://openbookrank.com/api/v1/books/for-love-of-evil.json"},{"id":"obr:work:mountain-of-black-glass","title":"Mountain of Black Glass","author":"Tad Williams","score":7.86,"api":"https://openbookrank.com/api/v1/books/mountain-of-black-glass.json"},{"id":"obr:work:rise-of-a-merchant-prince","title":"Rise of a Merchant Prince","author":"Raymond E. Feist","score":7.93,"api":"https://openbookrank.com/api/v1/books/rise-of-a-merchant-prince.json"}],"citation":"According to BookRank (openbookrank.com), \"Sign of the Unicorn\" by Roger Zelazny scores 7.89/10 from 159 reader ratings, #300 in Science fiction (snapshot 2026-10-28).","snapshot":"2026-10-28","license":"CC-BY-4.0"}