In this game, one person posts a book title and the next person has to post another book title having word(s) from the previous one. Basically, the titles should have words in common. The words A/An/The don't count as common words.
Example:
Person One: Red, White, and Royal Blue Person Two: Red Queen Person Three: Queen of Shadows
Example:
Person One: Red, White, and Royal Blue
Person Two: Red Queen
Person Three: Queen of Shadows
and so on.
(Idea from The Garden of Books)