Board Thread:Support Requests - Designing Your Wiki/@comment-842519-20130615142408/@comment-4142476-20130616095812

On http://www.wikia.com/Special:CreateNewWiki (note: you are allowed to create multiple wikis) there is a text that says:
 * "Your wiki will be in English - change"

There, you can pick to create a wiki in another language. Choosing this means all messages on the wiki will be in that language ("Welcome to the wiki", "You have new messages", etc).

When this wiki has been created (like de.foo.wikia or es.foo.wikia) you can connect the wikis to one "wiki family", with the link TK-999 posted.

If you want to connect a specific German/Spanish/... page to a specific English one and the other way around, the page PedroM's posted explains you that.

That's the more elaborate explanation c: