What makes it different from others?

It's funny, it's tense, it features two great performances from two actors and the director expertly creates a web of odd tension where you actually don't know what is happening for the majority of the run time.

There is, somehow, an interesting story here, as well as some good acting. There are also some good scenes

All of these films share one commonality, that being a kind of emotional center that humanizes a cast of monsters.