Maybe that is not the case as I have not tried it, but the way people talk about this demo makes me think about a game by Cactus. I don't remember the name of the game, but people were arguing back and forth and people did not seem to agree on how to solve some problems, etc. A mad house. The thing is the game was using several criteria based on the machine it was running on to alter the game. There were like 10ish versions, and a same computer would always run the same, so different people had, unbeknownst to them, different games. Fine trolling that was!
I suspect this demo could do the same thing and mix different puzzles based on the MAC address of the PS4 or whatever.