So a year ago, I tried to make a wiki-based universe that anyone can contribute to. It was alright, but it ultimately flopped due to lack of organization. Now I'm trying again, this time with a lot more effort put into organizing it.
http://firstlight.wikidot.com/Basically, First Light is a completely open wiki-based universe that anyone can add to. It's set up so literature, games, artwork or the like can take place in the universe. It's somewhat of a high fantasy, but not really Tolken-esque, as it focuses more on the scientific aspect of a fantasy universe.
I tried to have it incorporate several different settings. For example, the Anten peninsula is steampunk-ish, Nescia is oceanpunk, South Espacus region is middle-eastern, and so on.
Suggestions are welcome. Anyway, feel free to contribute whatever. Hope it catches on this time