I really just dont know. I get very confused on genre designations.
Its set in the real word, but its kind of a speculative fiction in the sense there is a different history the world doesnt know about.
People say its UF or SF because my Characters are F.R.E.A.K.s, which truthfully after 9 books still no one knows what they "turely" are, best guess is the next step in human evolution. There entire being is based around the "Fight or Flight Theory" and it gives them special ability (NOT superpowers for all this can be explained by real science and are only slight extremes of what real people can do.)
I say its a Thriller pushing a bit into Horror, based first on the Monster, a shape shifting speices that is trying to take over the world, and because the whole book as a very suspensful feel to it, with some good scary parts.
Its also been called a mystery, because the entire book revolves around the MC's trying to figure out 1) why they are the only "humans" on earth awake and why they are F.R.E.A.K.s and what that means 2) what the hell the Monsters are 3) how to return everything the way it was. But their is a giant mind screwing twist at the end!
So i guess its a SF, UF, Thriller, horror, mystery.