A Game for One Player and the Internet
From the introduction:
"I’m a monster. I look and sound human, but I am not. My lair is in [pick a real city]. I am getting out, though, because I desperately need [pick a need]. I must satisfy my need, and return safely to my lair.
"You, my reader friend, may join one of three factions. You do this by responding to a question addressed to that faction. If your answer is selected, then, for the remainder of this story, you will be a member of that faction. If no answer of yours has yet been selected, you remain factionless, and may answer any question you like."