Thread:GumballFanGirl4Ever/@comment-12542517-20130718021815/@comment-5691231-20130718031423

Because Wikia complies with COPPA or Childrens Online Privacy Protection Act - anyone under the age of 13 is not allowed to have an account here on Wikia.

Wikia needs to comply with it in order to keep their business running.

Actually, any website that collects personal information needs to comply with COPPA in order to keep their websites running.

Your friend can come back once they've reached a certain age.

You can read more about it here.