I revisted PopFly this weekend. It now contains a game creator.... which may help in a Silverlight Charity game we were thinking of making.
Naturally I will be struggling to justify this to our team at work for a business case. I am thinking that the technology alone, however, will provide a proving ground and entry point for those of use who haven't got the time to learn how to develop for this kind of thing.
I have been using this framework, mashup, callitwhatyouwill for a couple of hours and its really opened my eyes to how software might be developed in a few years.
Take the simple graphics change of a Projectile - Notice the switch to XAML button. This means you can get any artist to design the graphics you want! In fact Game Creator comes with many publicly posted XAML animation and images....