I think a better question is how were they able to catch John Cena so many times?
So what are they spending the first seven days solely on Call of Cthulhu or are they doing the Cthulhu Let's Play along side the usual random horror game every day?
They are doing a different horror game to fill out each week of October. If something happens to disrupt a game or if what they are playing turns out to be boring/broken/unplayable, they move onto the next one or return to another one.