Julio Cortázar, 1963. Two reading orders for a Paris/Buenos Aires narrative. The novel as game.
From Wikipedia
Hopscotch is a playground game popular in many countries around the world. Players toss a small object, sometimes called a piggy or lagger, into numbered triangles or a pattern of rectangles outlined on the ground and then hop or jump through the spaces and retrieve the object. It is a children's game that can be played with several players or alone. Hopscotch is a physical and cognitive workout.