I noticed this has been an issue as of late. Please read, show this article to members who may not get the memo, etc.
Anything regarded as a COMPETITION (or contest, event, or any sort of thing that requires several members and features judging) is forbidden on this wiki without getting the conscent of an Admin first. A lot of members have been trying to make these things, and yes we do encourage fun here; but we Admin also run contents/events/competitions and we host them in an orderly manner. We like to reward the members for their hard earned victories and efforts after the event is done (usually with a special image or a userbox), and we also control the enviroment of the event to keep it fun and safe for everyone. A lot of random people who do this have no idea how difficult these can actually be.
Basically, if you're thinking of trying to do ANYTHING like this, ask an Admin (myself included) beforehand. That is all for now.