Wow - scribble rapid prototyping for apps!
Interesting idea on kickstarter at the moment. Sketch up an app idea and bring it to life. Scribbletastic.
Not so much a gaming thing but you could totally use it for UI testing and menu testing and layouts, books - I am sure a few things
http://techcrunch.com/2013/09/29/appseed/
http://www.kickstarter.com/projects/appseed/appseed-turn-sketches-into-functioning-prototypes
Not so much a gaming thing but you could totally use it for UI testing and menu testing and layouts, books - I am sure a few things

http://techcrunch.com/2013/09/29/appseed/
http://www.kickstarter.com/projects/appseed/appseed-turn-sketches-into-functioning-prototypes