Board Thread:News and Announcements/@comment-5645428-20140830134121/@comment-5645428-20140831150249

''These Terms of Use apply to members and non-members alike. In order to use the Service, you must accept these Terms of Use. You may do so by (a) registering for membership with the Service and/or Company or (b) by actually using the Service.

You confirm that you are of legal age to form a binding contract with the Company, or an emancipated minor, or have parental or legal guardian consent and are fully able and competent to enter into, and comply with, [the] Terms of Use. In any case, you confirm that you are over the age of 13, and acknowledge that the Service is not intended for children under 13 years of age. You may not use the Service and may not accept the Terms of Use if you by law are barred from using the Service or accepting the Terms of Use.''

As I understand it, under the Terms and Conditions reading this excerpt, you may not edit if under the age of thirteen, meaning the use of an anonymous account is subsequently prohibited. I, however, cannot myself verify your age and therefore can only advise but not directly enforce compliance, where you take into your own responsibility your actions whether they are in violation of site policy with resulting implications

If you are in no violation, certainly, do create an account. This isn't the only wiki and having an account counts for all Wikia wikis.