This Way Up by Tom Percival

Everyone knows which way `UP' is. It's the opposite of `DOWN'. Or at least, that's what Queetle had always thought . . . Now, he's about to discover that `UP' might not be as simple as it seems. When he meets Meeple, a creature who lives and walks around SIDEWAYS on a different side of their shared planet, Queetle is forced to reconsider everything he thought he knew. A powerful, warm-hearted picture book from the creator of the bestselling Big Bright Feelings series, celebrating the life-changing power of seeing the world from other points of view.
Binding: Hardback