Using tropes inspired by other media plots (Mainly about the Daybreakers (2009) movie)

So, I am working on a video game about folklore and stuff with the existence of vampires in that world. Long story short, I am a fan of the Daybreakers (2009) movie concept of vampires turning into animalistic monsters when starved of human blood, and I wanted to put the general concept or something similar in my game. My question is whether underlying story tropes such as what I described are copyright-protected and to what degree, and if it would be a problem if I did it.