You are in a deserted opera house. What's in the room to the south? "Cloak of Darkness" is a very simple story, with two different endings. It's a starting point -- a demonstration of how to use Scratch to tell a story.
"Scratchy Cloak of Darkness" is based on the "Cloak of Darkness" specification -- a very simple pattern, designed to help programmers compare the strengths and weaknesses of various coding environments. For more on the "Cloak of Darkness" project, see http://www.firthworks.com/roger/cloak/