Gamification for Engaging Job Candidates

In Mashable:  Hardly traditional.  We sent technical candidates 'to the board', to do things live, and that created dynamics.  But also difficult to measure.  And rarely used competitive dynamics, though all would agree that it would be best to bring in people for a week and watch how they operated.  Thus the potential for interns. But have them compete in dynamic games?   Like many gamified tasks, it sounds appealing, but hard to constructively deliver.