Impressions: HacKAthon 2012
Hackathon 2012 from Young Targets on Vimeo.
Wikipedia says: A hackathon (also known as a hack day, hackfest or codefest) is an event in which computer programmers and others in the field of software development, like graphic designers, interface designers and project managers, collaborate intensively on software-related projects. At the Nerd-Zone HacKAthon in Karlsruhe more than 50 coder worked hard within 24 hours to program an app which should be useful for nerdy residential communities.