A man uses an iPad to play a video game, which is projected on the surface of the Fiesp building, headquarters of the Industry Federation of Sao Paulo, during the "Play!" exhibition in the financial center of Sao Paulo's Avenida Paulista on March 27. The exhibition aims to explore the possibilities of integrating digital art in public space through new communication tools, according the curator of the event. The games presented in the exhibition are from the 1970s and 80s.  Reuters/Nacho Doce