As bmoskowitz pointed out we have some rough words about the project. For this group, I'd in particular point out the roadmap and CONTRIBUTORS.md documents on the github repo:
https://github.com/mozilla/appmaker/blob/master/ROADMAP.md
https://github.com/mozilla/appmaker/blob/master/CONTRIBUTING.md
At the highest level, we're exploring whether it's possible to make a tool that lets non-devs (_not_ you folks!) who currently see their phones as a pure engine of consumption, as a place where they can create something fun or useful.
It's very, very early software, and it's public mostly because a) we kinda don't know how to do anything else, and b) we're going to use early and frequent user feedback to correct the aim on the product.
If people are interested, we're more than happy to entertain questions either here or on github, irc, the mailing list, etc.
Oh, and yeah, many of the components are broken, brittle, etc. This is still just a prototype.
That said, we're getting positive reactions from people close to our target audience, such as high school teachers, people teaching others how to make their first app, etc.
I'm sure we have loads of x-browser compatibility bugs, as well as known issues with respect to accessibility, absent localization, no great mechanism for contributing new components, and many more.
Oh, and the gamification bits in particular were really just testing the gamification APIs -- the levels we have in place are deeply unuseful =).