http://www.worldforge.org

Link to FAQ:
http://worldforge.org/website/helpdesk/faq/

Screenshot Gallery:
http://haven.theonering.net/picpost/source/Worldforge

Explanation:
Worldforge is currently in Development, and will allow for people to create their own worlds. It is entirely possible that with enough interest a Middle Earth world could be created literally by fans. There will be a toolset to build things in this game, leaving the worlds that are built up to the creators imagination.

Review:
Worldforge looks to be a very interesting, and new idea. Around 2001 a version of Worldforge should be released allowing players to create their own worlds, and code them in every way. There will be easy systems to create worlds, so that just about anyone with time and an imagination can help in the creation of a world that they, and others of like mind can role-play in.

Imagine building the glorious city of Minas Tirith, or the ancient Dwarven Kingdom of Khazad-dum. Perhaps designing the hidden city of Gondolin, the possibilities are seemingly endless. From what I understand when Worldforge is done, and players can create their own worlds, all the details you can think of could be changed and added. On the FAQ of Worldforge it is mentioned that this game could be thought of as a free Everquest or ultima Online. Free to create any world that comes to mind. This has great possibilities, and with enough effort on the part of Middle Earth fans, could be used to create something great.