Alex Galloway has put together a lovely digital adaptation of a chess-like game created by French Marxist Guy Debord dubbed Kriegspiel; now the estate of Debord is sending cease and desist letters to Galloway, claiming the digital version is infringing on the intellectual property rights of Debord. Reminiscent of the problem faced by the Scrabulous creators, Galloway is insisting that the idea of a game and rules are not subject to copyright. Ian Bogost weighs in: