There are three modes. There is "Quiz Game" a/k/a Play mode, which is in Flash. There is HTML or Classic mode. Then there is Flash or Interactive mode, which is also Flash (it has the same interface as the InstaQuiz).
On the intro page of each quiz, you generally get your choice of quizzes in this order "Quiz Game", "HTML", and "Flash".
One of my quizzes has the word "obscure(d)" in the title. I noticed that one of the modes is missing, the last mode. Only Quiz Game and HTML were showing, even though in creating the quiz I had selected all three modes to be allowed.
So I asked an editor who told me that Flash (Interactive) is disabled for quizzes with the words "obscure" or "impossible" or their derivatives in the title. When I asked why, he said he didn't know and that I should inquire in the forum.
See for yourself. Any quiz with "obscure" in the title does not have the third mode enabled.
Can anyone tell me why?