Didn't live up to expectations. You shouldn't take on something so well known unless your going to do a shit hot job of it otherwise leave it alone. Our image of slender man was enough. Needed a more solid story behind it instead of the generic high school one. Found the main characters irritating. The ending was very poor.
Created as an internet boogey man this film take on the character needed more back story/mythology about the character instead of a generic teenagers in trouble tale. Not so far removed from 'Bloody Mary' or 'Candyman' with just a twist of technology. OK of its kind but certainly nothing new here.
Having the right amount of jolts to please the target audience and the apt amount of spooky to appease more seasoned viewers, "Slender Man" should at least have you coming away with something of an appreciation for this amusing take on an internet urban legend. Most fascinating is the film's subtext evidently attempting to capture the teenage mind and the teenage mind on memes. Not great, but not shallow.