Hello.
i heard that, other than the meteors/song, that there is yet another major easter egg.
now, i know that there is alot of speculation over zombies so i am going to add to it.
this easter egg, has to do with the film reel's collected when teleporting. so as it goes, there are 4 total film reals, 1 for each player. so when all 4 people have a film reel, you all go to the PaP room. now, you all huddle around the projector, and the goal is for all 4 people to put the film clips in at one time. if this is done suscessfully, then a ladder should drop down in the theater, leading to a catwalk, were somehow you can access the roof. the ladder/catwalf is visable, when you go to the mystery box spot on the stage and look at the wall directly to the left, you see the ladder and the catwalk.
so that is it.
please try this, and tell me if anything happens