Improvisation is a high-stakes risk in the world of theater, as is audience interactivity. Fallen Stars at the Charity Sale greatly succeeds at the former, while unfortunately faltering in the area of the latter. The good news of course is that show mechanics are always adjustable, especially when they are built upon a strong core concept and expert ensemble like this show is. If Fallen Stars finds a life beyond Fringe, I would certainly like to see it again someday, to see what entirely new objects and experience awaits me.