Slides that accompanied a lecture I delivered at the Nijmegen Design Platform (NOP) on 17 March 2009. To summarize, this was an attempt to introduce a group of designers from 'traditional' backgrounds to pervasive games, with particular focus on how those can be applied to 'serious' domains. More background can be found in this blog post: http://leapfrog.nl/blog/archives/2009/07/20/buildings-and-brains-at-the-nijmegen-design-platform-nop/