User blog comment:SandorL/New Club Penguin Rooms Ep. 2 (Rooftop and 2nd Floor)/@comment-5114925-20120927224415/@comment-4500149-20120927233014

Well, he uses Club Penguin's SWFs to make the custom rooms, so... I guess you could say everything is "copied" (from CP)? It must take a lot of time and imagination to do this, though. Just think about how many SWFs he has to save to his computer (especially for the Pet Shop Upstairs one) and then place in the room. I'm assuming he also has to clear all of the furniture and various objects out of the room before he starts.