For the technical limitation "photos". I'd planned to use some photos of myself (or someone else, but strangely no-one volunteered) as a walk/run cycle, and make some game around that. They turned out more like some slightly crazed skank thing (pretty much how I normally dance), and I just went with the flow from there.

As Perrin put it I spent a lot of time programatically reproducing standard click-and-play behaviour.

DANCE! DANCE! DANCE!

Screenshot: