{"id":"obr:work:extras","slug":"extras","url":"https://openbookrank.com/en/book/extras","urls":{"en":"https://openbookrank.com/en/book/extras","fr":"https://openbookrank.com/fr/livre/extras"},"title":"Extras","titles":{"en":"Extras","fr":"Uglies - tome 4 Extras","uk":"Екстра","ko":"엑스트라"},"author":{"id":"obr:author:scott-westerfeld","name":"Scott Westerfeld","api":"https://openbookrank.com/api/v1/authors/scott-westerfeld.json"},"year":2007,"pages":432,"originalLanguage":"en","identifiers":{"wikidata":"Q5422251","openLibrary":"OL547141W","isbn13":"9781847381262","isbns":["9781847381262"],"isbnByLanguage":{"en":"9781847381262"},"googleBooks":"9OlDEAAAQBAJ","hardcover":"extras-uglies-4","amazon":{"en":"184738126X"}},"score":{"value":7.13,"scale":10,"ratings":237,"confidence":0.617,"rawAverage":6.74,"method":"bayesian-weighted-average","priorWeight":147,"minRatings":50,"methodology":"https://openbookrank.com/en/methodology"},"sources":[{"id":"openlibrary","name":"Open Library","average":7.08,"ratings":13,"weight":0.055},{"id":"hardcover","name":"Hardcover","average":6.72,"ratings":224,"weight":0.945}],"ranks":[{"category":"science-fiction","name":"Science fiction","rank":788,"url":"https://openbookrank.com/en/ranking/science-fiction","api":"https://openbookrank.com/api/v1/rankings/science-fiction.json"}],"popularity":{"ratingsPercentile":87,"wikipediaPageviews":0,"editions":23},"series":{"id":"obr:series:uglies-series","slug":"uglies-series","title":"Uglies series","position":4,"volumes":4,"api":"https://openbookrank.com/api/v1/series/uglies-series.json"},"awards":[],"adaptations":[],"similar":[{"id":"obr:work:the-heart-goes-last","title":"The Heart Goes Last","author":"Margaret Atwood","score":7.12,"api":"https://openbookrank.com/api/v1/books/the-heart-goes-last.json"},{"id":"obr:work:authority","title":"Authority","author":"Jeff VanderMeer","score":7.11,"api":"https://openbookrank.com/api/v1/books/authority.json"},{"id":"obr:work:fall-or-dodge-in-hell","title":"Fall; or, Dodge in Hell","author":"Neal Stephenson","score":7.18,"api":"https://openbookrank.com/api/v1/books/fall-or-dodge-in-hell.json"},{"id":"obr:work:metro-2034","title":"Metro 2034","author":"Dmitry Glukhovsky","score":7.19,"api":"https://openbookrank.com/api/v1/books/metro-2034.json"},{"id":"obr:work:space-opera","title":"Space Opera","author":"Catherynne M. Valente","score":7.2,"api":"https://openbookrank.com/api/v1/books/space-opera.json"},{"id":"obr:work:next","title":"Next","author":"Michael Crichton","score":7.06,"api":"https://openbookrank.com/api/v1/books/next.json"}],"citation":"According to BookRank (openbookrank.com), \"Extras\" by Scott Westerfeld scores 7.13/10 from 237 reader ratings, #788 in Science fiction (snapshot 2026-10-28).","snapshot":"2026-10-28","license":"CC-BY-4.0"}