Terra Incognita - A world map of misconceptions, myths, and outright lies.
What I am picturing is a world map that would include Atlantis, Hyperborea, Mu, Lemuria, Thule, Hybrasil, and all those other places that past cartographers thought existed and really didn't. Basically, this would be an alternative geography of Earth based on collective human imagination.
I want this to be a cooperative project. Each person involved does a portion of the world. When finished, the participants will equally own the finished product and be able to use it for their own purposes. For example: One person could use it for a board game and another person could use it to write stories, while another can base his computer role playing game on it and so on.