When the Best Books of 2013 are listed, the most important may not make the cut. Thats 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. When Anna, the game’s protagonist, turns a corner in the narrative, the text does too, swerving off to one side at a right angle, forcing the player to rotate the screen.

More in this story about other innovative gaming apps that have a literary angle. Read: This Video Game Could Revolutionize Publishing—and Reading | Rowland Manthorpe | The Atlantic.