Dave Gray, the co-author of Gamestorming and founder of Xplane, has created a special tutorial film for Jammers at the Global Service Jam.

In the video, Dave explains how he would use Gamestorming techniques in a service design project. You can watch the whole film (13 minutes) on Dave's blog here or simply below.
Dave is happy to discuss his ideas with Jammers! Just tweet him @DaveGray.
Thanks Dave!