In 1999, a short video of a solitary boy kicking an empty bottle up a hill in Mexico City became the first instalment of Children’s Games, a series of works by artist Francis Alÿs (b. Antwerp, 1959). The ongoing project, which now numbers around thirty-five works, has gradually given shape to an extensive collection of videos of children at play. For almost twenty years, Alÿs and his collaborators Félix Blume, Julien Devaux, and Rafael Ortega have been travelling around the world to docu...