<http://www.enterthemall.com/ecstory/story/tabula-Rasa---story-candidates->
Above you will find a chapter devoted to giving authors a blank slate to work with. You come up with the story start, character, plot devices, and make it engaging while open ended and which ever stories do the best get their own seperate story trees.
Yes, my start story is short and kind of crap. So prove your better! Let's see what you all can come up with!
If you think you could have written a start of a fiction branches story, let's see it!