Dan Franklin

When the Best Books of 2013 are listed, the most important may not make the cut. That's because the most exciting literary innovation of the year is not a book at all, but a video game for iPad and iPhone. Device 6 is a metaphysical thriller in which the world is made almost entirely from words. Playing it is like reading a book-except, in this book, the words veer off in unexpected directions, rather than progressing in orderly fashion down the page.

 Vintage Books and Aimer Media have released a Haruki Murakami diary app containing six new exclusive short stories by the Japanese author, as well as a selection of quotations from his 13 backlist titles and latest novel, 1Q84.

The app, for iPad, iPhone and iPod Touch, is priced £1.99. Other material and features include the cover artwork from the author's newly-designed backlist, the ability to add, organise and delete events quickly and easily, share favourite quotes via email and social media, and access to iBooks without leaving the app…