The game by Diana Wynne Jones

HarperCollins, 2007.
(Ages 10+) This is another well written, fast moving story by Diana Wynne Jones. Mythology of all kinds are mentioned and played with in The game. Many of the characters are loosely connected with Ancient Greek mythological beings. Hayley has been packed off, abruptly, to her aunt, whose home is quite relaxed and boisterous compared to her grandmother's where she has grown up, believing that she is an orphan.
The mythosphere is a key dimension of the story, where myths, tales, theories, beliefs, stories, legends and hopes are generated on Earth. Hayley and her extended family all have the ability to move about the mythosphere. Hayley discovers that her parents have been trapped by her Uncle Jolyon who holds enormous power over the family. Hayley must travel like a comet to free them and ensure that the mythosphere isn't tampered with.
Jones also includes an author's note section which highlights some myths and legends that are mentioned. Also in this section is a cross promotion/recommendations of other novels by Jones which readers may enjoy. These are suggested through themes which may encourage readers to branch out a little into similar genres that they may enjoy.
Liz Eckert