In the society striven for by the Situationist International, Homo ludens, or playing humans, supplant Homo oeconomicus. As part of The Most Dangerous Game, on two evenings HKW is taking playing seriously: The lobby will become a playroom and the exhibition will be open until 11 pm. The Invisible Playground network invites visitors to take part in a course of more or less dangerous games in and around HKW. Cultural Studies students from the University of Potsdam will act as…