More fantasy than SF
I don't know about any of you, but all of this screams fantasy to me: medieval setting with steam-punk tech, magical powers that allow individuals to transform, giant beings that don't eat. It reminds me of Jack the Giant Slayer a lot more than say, Mad Max, Snowpiercer, The Maze Runner, Hunger Games, Divergent, Planet of the Apes (the new ones), anything with DEAD in the title and whatnot.
So, could this be considered fantasy instead of SF?
Logan: I don't know!
Rogue: You don't know, or you don't care?
Logan: Pick one. X-Men