The biggest problem with Slender Man is that for large swathes not much happens, and when it does it’s rather gutless. Adam Graham, Detroit News:
It doesn’t add up to much more than a shoulder shrug. Perhaps that’s one way to kill off Slender Man: make his story so dull that no one cares.
For what should be a zippy 93-minute film, it sure drags. There is some minor entertainment value, and it’s certainly no worse than The Conjuring and its ilk that critics fell over each-other about. This movie did instruct me on a fantastic instrumental track from 1971, “Maggot Brain” by Funkadelic. But there’s not a lot going on here. Based on a web/urban legend, once again we see a failure to tap into readily available material, including its own poster.
I will say one thing: a movie like this makes you appreciate the genius of David Lynch all the more. Funkadelic and the beginning third raise Slender Man to 4/10.