{"id":"obr:work:halo-cryptum","slug":"halo-cryptum","url":"https://openbookrank.com/es/libro/halo-cryptum","urls":{"es":"https://openbookrank.com/es/libro/halo-cryptum","fr":"https://openbookrank.com/fr/livre/halo-cryptum","it":"https://openbookrank.com/it/libro/halo-cryptum","ja":"https://openbookrank.com/ja/hon/halo-cryptum","pt":"https://openbookrank.com/pt/livro/halo-cryptum"},"title":"Halo: Cryptum","titles":{"fr":"Cryptum","it":"Halo: Cryptum","en":"Halo: Cryptum","de":"Halo: Die Blutsväter-Saga: Kryptum","es":"Halo: Cryptum","pt":"Halo: Cryptum","nl":"Halo: Cryptum","ko":"헤일로: 크립텀"},"author":{"id":"obr:author:greg-bear","name":"Greg Bear","api":"https://openbookrank.com/api/v1/authors/greg-bear.json"},"year":2011,"pages":277,"originalLanguage":"en","identifiers":{"wikidata":"Q2017025","openLibrary":"OL37809629W","isbn13":"9780765323965","isbns":["9780765323965"],"isbnByLanguage":{"en":"9780765323965"},"googleBooks":"t60QZoBzwSIC","hardcover":"halo-cryptum","amazon":null},"score":{"value":null,"scale":10,"ratings":53,"confidence":null,"rawAverage":null,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[],"ranks":[],"popularity":{"ratingsPercentile":67,"wikipediaPageviews":0,"editions":0},"series":{"id":"obr:series:halo","slug":"halo","title":"Halo","position":null,"volumes":35,"api":"https://openbookrank.com/api/v1/series/halo.json"},"awards":[],"adaptations":[],"similar":[],"citation":"BookRank (openbookrank.com) lists \"Halo: Cryptum\" by Greg Bear but does not score it: it has fewer than 50 reader ratings (snapshot 2026-10-28).","snapshot":"2026-10-28","license":"CC-BY-4.0"}