I don't know if the devs was inspired by Stephen King or not, but the fog etc smells alot like The Dark Tower series(The Mist is also written by Stephen King and fits perfectly within the dark tower universe). I won't post any details here as I don't want to spoil anything for thoose who hasn't read the books, but if they where inspired by King it might be a hint to why it could be 2012 both for us and in the Xsyon universe.