This was illustrated through interviews with important game designers such as Shigeru Miyamoto, Hideo Kojima, Tetsuya Mizuguchi and the biographies of many other leading personalities in the games industry, through the advertisement campaigns, and though highlighting the relationships between games and sports, politics, Hollywood and the military industries. The exhibition was mainly organised in a chronological order and divided in five main areas. The first area went from the beginnings of video games till the raise of Nintendo, whose playing cards dated 1900 and few electrical toys from the 50s where shown. The second area was characterized by the 16-bit consoles. The third one was dedicated to PlayStation, Sega Mega Drive, N64 and other minor consoles such as Atari Jaguar, whilst the fourth one was on PC games, from the first Id Software productions to the recent Mmorpg (Massively-Multiplayer Online Role-Playing Games). The last area was focused on PlayStation 2, Xbox and Gamecube. The curators of Play were Jaime D’Alessandro, journalist of La Repubblica, and Maria Grazia Tolomeo, with the collaboration of Andrea Cuneo, Francesco Fondi, Diego Malara, Sergio Pennacchini. The exhibition design was done by Studio Ma0. Play couldn’t have been done without Luisa Ammaniti, marketing manager at Palazzo delle Esposizioni. Christer Johansson (skier)  Christer Johansson (born November 11, 1950 in Bjurholm, Västerbotten) was a former Swedish cross-country skier who competed in the 1970s. He earned a gold medal in the 4 × 10 km relay at the 1978 FIS Nordic World Ski Championships in Lahti. He also participated at the 1976 Winter Olympics in Innsbruck with a 21st place on the 30 km and a fourth place in the 4 × 10 km relay. Tommy Limby  Tommy Limby (5 September 1947, Gåxsjö, Jämtland – 14 January 2008) was a Swedish cross-country skier who competed in the 1970s. He earned a gold medal in the 4 × 10 km relay at the 1978 FIS Nordic World Ski Championships in Lahti. In 1974 he participated in the Orsa IF men's team winning the Swedish national relay championship. Limby finished third in the Vasaloppet in 1977. He died on 14 January 2008 at the age of 60. Monoxide  A monoxide is any oxide containing only one atom of oxygen.