The Game Developers Conference in San Francisco (more commonly known as GDC) is one of the highlights of the game industry calendar. An annual event drawing game developers of all stripes from around the globe, it is seen as one of the premier places for developers to network, companies to show off new tech, CEOs to mingle and business deals to be made. Yet the big discussion animating conference goers at this year's GDC was something very different. Namely the unionisation of the games industry.