Board Thread:General Discussion/@comment-26281081-20130504210223/@comment-5251339-20130504210820

It is very fair for two wikis on the same topic to coexist. However, an alternate suggestion (usually not rid competition and increase traffic) is to merge the wikis. This redirects one to the other and the users and pages are all moved to one.

Nevertheless, this is your decision, but it is legal to have to wikis on the same topic on Wikia, regardless of when they were made.