Book mind reader

The whole game runs in this page, from a table of books built from Open Library and Wikidata. It knows about 5,000 of the most-read books, so it will not know every book, and when it does not it says so rather than guessing. Playing sends nothing. When it fails, there are buttons that let you tell it what it got wrong — which book you meant, or that a year or a title is wrong. Each one says exactly what it sends before you tap it, and nothing goes anywhere unless you do. No account, and nothing about you.

Know a book it does not have? Tell it about a book — you do not have to play a game first.