The goal it to create an imaginary universe/world!
If you want to add/modify something, just do a pull request and we'll merge it (assuming the change is accepted). Modifications are made under the CC-BY licence. Part of the interest of the thing is to see how well tools like version control, issues and collaborative FLOSS writing can apply to worldbuilding.
Please have a look at the issues, where most of our discussions take place, and ask questions or give your opinion! Also, forks are encouraged. It would be complicated to have anybody able to change our repo directly; forks are a nice way to let people work as they please, without the troubles of a single big write-access-for-everyone repo.
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