Dalavesta: The Broken Doll

An interesting extension of the idea of machinima. Fans tell the story in the game first by actually playing it…

Dalavesta: The Broken Doll was a psychological-based horror [storyline in World of Warcraft]. It was a title for a series of events that multiple people joined, played, and influenced. It was a storyline crafted by the participants — but more importantly, it was crafted for them.”

then the story-game makers spin off “a machinima trailer and upcoming video series”.