I've updated the rules with these additions:
- No straight out copying or stealing content from other maps, official or otherwise. Inspiration and ideas are good, just make sure you built it yourself for this competition.
Maps that have been started but has not yet been released could enter the competition after approval from me (Ravidge). - updated!
You can't recycle your previous maps into this competition. - updated!
I was hoping that I wouldn't need to clarify this, and that I could deal with it on a case by case basis when it popped up. but it's getting out of hand, too many are trying to sneak their months old snippets (/whole maps) of work into the competition.
I'm still allowing unreleased content that was made recently. But I can not give people permission to use parts of their old maps for this competition, it's not what this event is about.
edit: note that I haven't changed the rules, just clarified my intentions.