It's in it's beta. Version 0.9.7.
SLENDER: THE EIGHT PAGES
Based on the mythical Slenderman. You have to walk around a dark forest at night with a weak flashlight and find these eight pages. All the while, Slenderman is stalking you. Its freeware and worth a google.
Made me jump when slenderman jumped out at me.
Here's a screenshot.
Run for your life!
Rule #1. Never turn around because he's always watching, always there....