well i played it and i got 6/8 pages and the basterd got me. it did make me jump pretty good the first time i saw him because he just pops out of no where. and it plays this really loud noise.
I've never heard of this until now...i saw a guy called theradbrad play slender on his channel and one of the comments mentioned it as a old urban legend, so i looked it up....creepy stuff even if it is fake..lol