http://www.slendergame.com/
Simple yet terrifyingly scary, the game Slender drops you in a sandbox map where you must collection eight scattered pages while avoiding the enemy Slender Man.
You are said to be an unknown woman with only the goal of collecting all eight pages in mind. You are equipped with nothing more than a slowly dying flashlight and a camera with a nice, somewhat pointless zoom option. While the flashlight does nothing more than prevent you from being blinded by the darkness of the world (and said to make it less likely to lose), your camera does an excellent job of warning you when Slender Man is in the vicinity. Your camera also does a startling job of scaring the heck out of you when this happens.
Your environment is a dark and eerie forest full of different monuments from which you can usually come across the pages you are seeking. They range from things as simple as large rocks and twisted trees to man-made foundations and obscure pillars. These different locations are reasonably spaced apart from one another making for a fun venture through the wilderness.
Your enemy is internet-famous, supernatural, abnormality Slender Man. While there is nothing quite scary about Slender Man at a glance other than the spooky feelings you may get from his lack of facial features, his ability to just suddenly appear anywhere at anytime leaves you with your head under the covers. The general feeling of Slender Man is that he is always trailing right behind you, always watching you. While this may be partially true, this will not stop him from dropping out of the blue in front or next to you at any given time forcing you to turn tail and run back the way you came. (This also leads to frustrating moments of getting lost.) Looking at Slender Man for too long throws your character into shock sort of how the monsters in the game Amnesia work. Ultimately, it leads to a game over. Not to mention, coming within too close of a range with Mr. Slender Man concludes with a game over.
Slender can be downloaded for the PC and Mac free across several hosting sites. Links to some of these sites can be found on the unofficial website:
http://www.slendergame.com/
I have been playing this game for the last week now but it still manages to make me jump.
Also, I have been having a ball making different friends play it to see how they react.
My friend Erik made a recording of me playing Slender for the first time. Sadly, it is a rather dull run, but the commentary is kind of interesting as I was pretty scared and saying random things to keep my cool.
None.