Riddle plays and fairtales

I found a site with many scripts based on lore and fairy tales. One of the plays is a set of three known as riddle plays where there is a play and at the end there is a dilemma or a riddle that the audience can solve before solving the end of the play. It was just a thought
Link to the riddle plays: http://www.whootieowl.com/reading/RID/RID-open.html
Link to the site with many plays about lore and fairytales: http://www.storiestogrowby.com/script.html