Dr Jim Purbrick has both academic and industry experience in designing and building virtual worlds. At Nottingham University he worked on the MASSIVE-3 virtual environment system and Prix Ars Electronica winning mixed reality games with IGDA award winners, Blast Theory. In industry Jim has worked on Dragon Empires at Codemasters, developed networking and load balancing technology for Warhammer Online at Climax and is now working on scripting and networking technology for Second Life while setting up Linden Lab Brighton. In his spare time, Jim likes playing games, playing music and playing with technology.